How to detect Emerald Ash Borer in Ash Branches

Watch the video above from eabcolorado.com to see how the branches can be peeled to detect galleries and larvae. 

The Emerald Ash Borer has been found in Colorado. With it’s arrival, many of our urban Ash Trees are threatened by this pest. Early detection of it’s presence is crucial to planning and carrying out control in our community.

Visual surveys of checking trees can be helpful in identifying infected trees, however often, signs are not visible until the trees have been infected for 2 years or longer, giving the bugs plenty of time to increase their numbers.

The best method for early detection is through branch sampling, which is a highly effective method for finding EAB populations before outward signs or symptoms become apparent.

Up to 74% of infested trees, even those that are not showing symptoms, can be found using this simple technique.

Here’s how to do it: You’re looking for larvae under the bark, so plan a branch sample between September and May, then if you can, wait until after October, when the larvae are big, and it’s easy to see the galleries.

Read more about the Emerald Ash Borer, and whether or not you need to treat your Ash trees, click here »

Contact us today if you have any questions or concerns about the Emerald Ash Borer. Call us at 303.232.0666 or send us an estimate request below:

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Should you protect your Ash Tree from the Emerald Ash Borer in Denver?

Since the Emerald Ash Borer has landed in Colorado, a lot of people are asking us if they need to take preventative measures to protect their Ash Trees. Not all trees need to be treated, here is a great diagram from Colorado State Extension with good tips on how to decide if you should treat your trees, if you can do it yourself, or if you need to call us for a treatment.

Managing Emerald Ash Borer – A Decision Guide:

Emerald-Ash-Borer-

Emerald Ash Borer

What are the Emerald Ash Borer treatment options?

Homeowners can protect healthy Ash trees if:

  • The trunk less than 15 in. Diameter at Breast Height (see diagram above)
  • With over the counter soil drench products. One option are products containing 1.47% imidacloprid. These products are most effective when applied between May 1st and June 15th. Disclaimer: Over the counter formulations are not as strong as professional formulations and are not advised to be used on trees with a DBH of greater than 15 inches.

Professionals can protect ash trees:

  • With a trunk greater than 15 in. DBH.
  • Later in the year, using specialized equipment to apply insecticides that contain imidacloprid, dinotefuran, azadirachtin or emamectin benzoate.

Ash Trees CAN be saved if they are:

  • Healthy and vigorously growing, with more than half their leaves.
  • Enhancing the landscape.
  • Valuable to the owner.
  • Showing only few outward signs of EAB infestation.

Ash Trees should NOT be saved if they are: 

  • Unhealthy, with dead branches and more than half of their leaves missing.
  • Planted in poor sites or are not important to the landscape.
  • Showing many outward signs of EAB or other insect infestation (click here to view other wood boring insects that target Ash Trees), such as woodpecker damage, bark splits, and water sprouts at the tree base.

Contact us today if you have any questions about the Emerald Ash Borer.
Call us at 303.232.0666 or send us an estimate request below:
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Wood Boring Insects of Ash Trees

Ash is one of the most widely planted trees in Colorado, with most plantings either involving green ash (Fraxinus pennsylvanica) or white ash (F. americana). Several insects are associated with these plants, including leafcurling aphids, various caterpillars and sawflies that chew the leaves, and wood borers and bark beetles that develop within the trunk and limbs of the tree.

Larva of the lilac/ash borer. Photograph courtesy of David Cappaert/Michgan State University and BugWood.org.

Larva of the lilac/ash borer. Photograph courtesy of David Cappaert/Michgan State University and BugWood.org.

The wood borers and bark beetles can be particularly difficult to identify since there is minimal evidence of their activity on the surface of the plant and there is some overlap in the injuries that different species produce. Furthermore, there is increased interest in these insects since the discovery of a new wood borer, the emerald ash borer, in central Boulder in September 2013. With the addition of this species there are six types of wood boring insects that may be found in ash trees growing in Colorado: lilac/ash borer, flatheaded appletree borer, emerald ash borer, redheaded ash borer, pigeon tremex and the ash bark beetles.

Major Wood Borers of Ash:

Exit holes produced when the adult lilac/ash borer emerges in spring.

Exit holes produced when the adult lilac/ash borer emerges in spring.

Lilac/Ash Borer:

The lilac/ash borer (Podosesia syringae) is a native insect to North America and is the most commonly encountered wood borer in ash throughout Colorado. It is a type of moth in the “clearwing borer” family Sesiidae.

Larva of the lilac/ash borer showing prolegs tipped with hooked crochets on the abdomen. Photograph courtesy of Stanton Gill/University of Maryland.

Larva of the lilac/ash borer showing prolegs tipped with hooked crochets on the abdomen. Photograph courtesy of Stanton Gill/University of Maryland.

Adults of this insect emerge from trees during warm days in mid spring. In warmer areas and during warm seasons emergence may begin to occur in April, although the adults are more commonly encountered in May and early June. After mating, the females will lay eggs in cracks on the bark of ash trees. Most egg laying is concentrated in the lower trunk, sometimes extending into the lower scaffold limbs and a bit above. Lilac/ash borer adults do not possess chewing mouthparts so they do not feed on leaves.

Upon egg hatch the newly emerged larvae tunnel into the trunks or limbs producing irregular gouging wounds just under the bark. Later stage larvae may extend the tunnels deeply into the trunk and lilac/ash borer will produce more generalized riddling of the trunk and limbs than do the other borers associated with ash. Larvae of lilac/ash borer are cream colored with a dark head and can be distinguished from the other wood borers by a series of short, paired prolegs on the underside of abdomen, each tipped with a series of small hook (crochets).

Pupal skin of the lilac/ash borer extruding from exit hole in trunk.

Pupal skin of the lilac/ash borer extruding from exit hole in trunk.

External symptoms of lilac/ash borer injury often include some areas of swelling on the trunk and some epicormic branching. Also, when adults emerge from the tree the pupal skin is often pulled out and will remain for some time partially extruded from the trunk. The hole through which the adults emerge is generally round and somewhat irregular. Late stage larvae may also expel sawdust from the hole in the trunk, and lilac/ash borer is the only wood boring insect on ash that produces sawdust visible on the outside of the trunk.

Emerald Ash Borer:

The Emerald Ash Borer (Agrilus plannipennis) is an introduced insect to North America and is native to Asia. It is a type of beetle in the “flatheaded borer” (larval name) or “metallic wood borer” (adult name) family Buprestidae.

Adults of this insect emerge from trees during May and June, cutting their way through the bark. They then move to the crown of ash trees and for a period of weeks will feed on the foliage. After mating and maturation of the eggs, the females will lay eggs on the surface of the bark of ash trees. Originally, most egg laying is concentrated in the upper crown of the tree and areas near branch crotches appear to be a favored site of egg laying. Later, as the infestation progesses, the tree is more extensively colonized and egg laying will occur on the all areas of the trunk and larger limbs.

Larva of the emerald ash borer. Photograph courtesy of David Cappaert/Michigan State University and BugWood.org.

Larva of the emerald ash borer. Photograph courtesy of David Cappaert/Michigan State University and BugWood.org.

D-shaped exit hole produced by emerald ash borer (and flatheaded appletree borer). Photograph courtesy of David Cappaert/Michigan State University and BugWood.org.

D-shaped exit hole produced by emerald ash borer (and flatheaded appletree borer). Photograph courtesy of David Cappaert/Michigan State University and BugWood.org.

Upon egg hatch the newly emerged larvae tunnel into the trunks or limbs. Feeding occurs shallowly, in the cambium, although they may be found as deeply as about .-inch below the bark. Tunnels have a meandering form, gradually increasing in diameter as the insects grow, and are packed with fine sawdust-like excrement (frass). Just prior to pupation the larvae bore a bit more deeply into the trunk and form a cell within which they will pupate, head end facing outward. Larvae of emerald ash borer are cream colored, have a small head with pronounced dark jaws, feature a slightly flattened area behind the head, and have a very elongate and somewhat flattened body.

As emerald ash borer infestations progress a thinning of the crown is one of the more easily observed external symptoms. Epicormic branching may also occur. Also present are D-shaped exit holes in branches and, in advanced stages, the trunk that are cut by the emerging adults. No external sawdust is expelled by emerald ash borer.

Meandering tracks produced during larval feeding of the emerald ash borer. Photograph courtesy of Eric Day/VPI & SU and BugWood.org.

Meandering tracks produced during larval feeding of the emerald ash borer. Photograph courtesy of Eric Day/VPI & SU and BugWood.org.

Meandering tracks produced during larval feeding of the emerald ash borer. Photograph courtesy of Eric Day/VPI & SU and BugWood.org.

Minor Wood Borers of Ash:

Flatheaded Apple Tree Borer:

The flatheaded appletree borer (Chrysobothris femorata) is a native insect to North America and is associated with several hardwood trees in Colorado including oak, maple, ash, and apple. It is a type of beetle in the “flatheaded borer” (larval name) or “metallic wood borer” (adult name) family Buprestidae – as is the emerald ash borer.

Adults of this insect emerge from trees during May and June, cutting their way through the bark. They then move to the crown of ash trees and for a period of weeks will feed on the foliage. After mating and maturation of the eggs, the females will lay eggs on the surface of the bark of host trees, with egg laying concentrated on limbs that are showing decline or injury.

Larva of a flatheaded appletree borer. Photograph courtesy of James Solomon/USDA-FS and BugWood.org.

Larva of a flatheaded appletree borer. Photograph courtesy of James Solomon/USDA-FS and BugWood.org.

Upon egg hatch the newly emerged larvae tunnel into the trunks or limbs. Feeding occurs shallowly, in the cambium. Tunnels have a meandering form, gradually increasing in diameter as the insects grow, and are packed with fine, somewhat granular, sawdust-like excrement (frass). Just prior to pupation the larvae bore a bit more deeply into the trunk and form a cell within which they will pupate. Larvae of the flatheaded appletree borer are cream colored, have a small head with pronounced dark jaws, feature a broadly flattened area in the behind the head, and have a very elongate and somewhat flattened body. The broad area behind the head, wider in the flatheaded appletree borer, can generally be used to distinguish this insect from emerald ash borer. However, when the question of proper identification of flatheaded borers in ash is necessary, larvae should be sent for expert identification.

Exit holes produced by flatheaded appletree borer.

Exit holes produced by flatheaded appletree borer.

In ash trees flathheaded appletree borer is almost entirely restricted to limbs that are previously injured or in decline and it is not a primary pest of ash. Adults also produce D-shaped exit holes in branches which resemble those made by emerald ash borer.

Redheaded Ash Borer:

The redheaded ash borer (Neoclytus acuminatus) is a native insect to North America. It is a type of beetle in the “roundheaded borer” (larval name) or “longhorned beetle” (adult name) family Cerambycidae. The redheaded ash borer develops in a wide range of hardwood and, despite its common name, is infrequently found in ash; fruit trees are more common hosts of this insect in Colorado.

The redheaded ash borer is an insect found in many kinds of hardwoods in decline or that have been recently killed. Larval picture (above) by Dan Herms/The Ohio State University; Adult photograph (lower) by David Leatherman.

The redheaded ash borer is an insect found in many kinds of hardwoods in decline or that have been recently killed. Larval picture (above) by Dan Herms/The Ohio State University; Adult photograph (lower) by David Leatherman.

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Redheaded Ash Borer Larva

Adults of this insect emerge from trees from June through August, cutting their way through the bark. They feed for a brief period on foliage of host plants and, after mating and maturation of the eggs, the females will lay eggs in small pits that they chew into the bark of host trees.

Upon egg hatch the newly emerged larvae tunnel into the trunks or limbs. Feeding occurs deeply into the wood, producing riddling that may extend into the center of the plant and these tunnels are semicircular in cross section. Larvae of the redheaded ash borer are cream colored with a small head marked with pronounced dark jaws. The general body for is somewhat cylindrical. They can be distinguished from larvae of the lilac/ash borer in that they lack the small prolegs on the underside of the abdomen.

Larvae of the pigeon tremex, a type of horntail wasp.

Larvae of the pigeon tremex, a type of horntail wasp.

Pigeon Tremex:

The pigeon tremex (Tremex columba) is a native insect to North America. It is a type of wood boring wasp in the horntail family Siricidae. The pigeon tremex develops in a wide range of hardwood trees that are in advance stages of decline, including elm, maple, and ash.

Perfectly round exit holes are produced when the adult of the pigeon tremex horntail emerges from the trunk.

Perfectly round exit holes are produced when the adult of the pigeon tremex horntail emerges from the trunk.

Adults of this insect emerge from trees in midsummer. The females, which are large, brown cylindrical bodied wasps, can sometime be observed as they search the bark of host plants. Periodically females will drill into trees with a long ovipositor and, when the plant is suitable, will lay eggs into the wood. Pigeon tremex also introduces white rot fungi when laying eggs, which will produce decay in the area where the young wasps develop.

Feeding occurs deeply into the wood, producing riddling that may extend into the center of the plant and these tunnels are round in cross section. Larvae of the pigeon tremex are cream colored with a cylindrical body. The head is large, compared to the other wood borers, but, except for the jaws, it is not darkened.

Pigeon tremex is restricted to ash trees that are in advanced decline and it is not a primary pest of ash. Adults produce round, smoothly cut holes when exiting through the bark.

Ash Bark Beetles:

Larval galleries produced by ash bark beetles.

Larval galleries produced by ash bark beetles.

Three species of ash bark beetles (Hylesinus species) are associated with ash in Colorado. Bark beetles are members (subfamily Scolytinae) of the “snout beetle” or “weevil” family Curculionidae. At least three species occur in Colorado, Hylesinus californicus appears to predominate in the western areas and H. aculeatus in the east. In addition, H criddlei has been found in several eastern Colorado locations.

Exit holes produced by ash bark beetles.

Exit holes produced by ash bark beetles.

Adult bark beetles cut egg galleries under the bark and larvae tunnel perpendicular to the gallery. These injuries can girdle and sometimes kill branches. On rare occasions entire trees are killed by these insects. Injured limbs and heavily shaded branches in the interior of the tree are most commonly attacked. Transplanted trees can be at special risk. Ash bark beetles may infest almost the entire tree, from finger-diameter branches to the main trunk.

Egg galleries run across the grain and often have two “arms” with a central chamber in the middle. Also characteristic of these insects are that small “ventilation holes” perforate the bark above the egg galleries. The tunnels are almost invariably colonized by fungi that stain the wood a rich brown color around the feeding sites. The larvae are pale, legless grubs that develop by feeding under the bark. Sap may ooze from wounds in twigs, staining the bark.

Overwintering can occur as either late-instar larvae under the bark or as adults that winter within niches cut into green bark of the outer trunk. Adults begin to become active in early to mid-spring and females construct girdling tunnels under the bark that may encircle twigs and small branches. During this tunneling small ventilation holes are also constructed through the bark surface that are visible; sap may ooze from the wounds. These tunnels are the main egg galleries characterized by running at right angles to branch length. Brown wood-staining fungi are commonly associated with the galleries.

Contact us today if you have any questions about your trees and shrubs.
Call us at 303.232.0666 or send us an estimate request below:
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Lawn Problems in Denver

Common Denver Lawn Problems

Examples of Mite Damage

Lawn difficulties can occur in small areas or major patches. In the worst cases the entire lawn can show damage. Sometimes the problems are due to poor growing environments, improper lawn care practices, or adverse weather conditions. Other problems can be due to inadequate water, pets, insects, pests, or diseases.

The following information is a general guideline to common lawn problems.

Frost damage – as new grass starts to try to fill in damaged areas, a late spring frost can hit the tender shoots and cause a dieback of the tips.

Water and ice damage – straw colored or rotted grass, especially where water collects in frozen soil.

Snow molds – these spots appear as matted down grass with a grey appearance.

Winter desiccation – this often occurs in areas where the grass is exposed to the weather. these areas are drier and can even be suffering from “wind burn” leaving the lawn brown and slow to recover without proper spring maintenance.

Mag chloride/road splash back damage – dead or yellow grass along sidewalks, driveways, or roads where mag chloride and or salt is typically put down.

Corrective Measures:

Rake grass and fluff it up so the matted down grass can get proper air flow.

Don’t wait too long to water exposed areas of the lawn. Between winter mites and the dry soil, yards need water to recover.

In areas hit my mag chloride, water the damaged areas heavily to try to wash away salt if damage is from salt.

Reseed damaged areas: Note- if you wish to reseed putting down a pre-emergent to control crabgrass cannot be done.

A lawn care program with Mountain High can help your lawn recover from winter desiccation.

SOIL COMPLICATIONS AND REMEDIAL METHODS

Soil Compaction signs: Soil is hard. Turf is thin. Rooting is poor.

The biggest and most important thing to do with soil compaction is aeration. Spring and Fall aerations are key to yards with heavy soil compaction.

Reroute foot traffic, including pet traffic, to other areas and change up child play areas to avoid frequent packing down of soil of the same areas.

Mountain High offers aeration services. Please contact us for pricing.

INSECT DAMAGE AND CURATIVE METHODS

Mites: Mites leave the lawn dry, crunchy and bleached looking. Walking over a badly mite damaged lawn is totally different than walking over a non-mite damaged lawn. The grass is hard and straw-like after being hit by mites.

The key to getting a yard to recover from mites is water and lots of it. Mites feed on warmer areas of the lawn during the colder months. They attack the blades of grass, removing moisture. In the worst cases, mites can kill off sections of a lawn by removing all the water from the plants.

Yards with a history of mite activity along driveways, sidewalks, fences, rock walls, and yards with south and west facing slopes should be treated for mites during the winter. This is key since this is when they are doing the most damage and there is no moisture being applied to replenish what they are stealing. Winter watering is also very important even when getting mite sprays.

White grubs/Japanese beetle grubs: Gradually increasing patches of turf turns brown in irregular shapes. This damage often starts out looking like drought stress. Often times birds pecking at the lawn or wild animals digging in the damage areas signal grubs just below the surface. As damage progresses, the turf can easily be pulled up since there are little to no root structures left.

Chinch bugs: Chinch bugs are generally observed in sunny areas or on sandy soils. They are usually observed during hot periods in the heat of summer, but in the spring they can be found in hot spots. The damage from last year will be very slow to recover and the grass will be noticeably weaker in chinch bug damaged areas.

Bluegrass bill bugs: Bill bug activity is periodic in the Front Range; billbugs grubs are much smaller than many lawn grubs. The damage normally begins as yellow areas along the edges of driveways and sidewalks. Damage is usually observed in June. Much like other types of grubs, the damage they cause progresses in irregular ways and the grass can often be pulled up easily. The difference between mite and billbug damage is the overall appearance of the grass. Mites attack the grass blades, billbug grubs hit the roots. Because of this, mites leave the grass bleached and crunchy while billbug grub damage leaves the tops of the grass alone so it is still soft to the touch.

All these listed insects can be controlled with properly timed applications of pesticides. Mountain High has well trained technicians and qualified supervisors who know how to identify the problem and put down the proper pesticides to treat these damaging pests.

Improper fertilizer applications: Over and under-fertilizing can cause major problems with a lawn. A massive over application can even burn and kill a lawn. These problems typically occur because the person doing the application doesn’t know how to properly adjust the spreader the fertilizer is being put down with. A malfunction of a spreader can also result in over or under application. Brown streaks lined with extra green growth can occur in areas of application overlap. In the worst cases the lawn can be left striped with bright green, lime green, or even lines of dead grass.

Mountain High technicians have the needed equipment and experience to provide proper fertilization every time.

Dog urine: Dog spots are characterized by areas of brown, dead looking, grass with longer bright green around the outside. Aeration, Revive, and other chemical remediation can help. On a badly damaged area replacement may be the only option.

Let Mountain High provide Revive treatments and do both spring and fall aerations to help maintain the health of your yard so both you and your pets can enjoy a happy healthy lawn.

WATER PROBLEMS

Watering is key to the success of any lawn:

In the spring it is best to water deeply a couple of times a week rather than small amounts of water more often. This promotes deeper root growth.

Watering early in the day is best so foliage will dry up quickly while the morning dew will be washed down into the soil. Night watering is not recommended during hot humid weather because of the potential for disease development.

Too little water:  Will cause wilting , browning, odd patches of green closer to the sprinkler heads, and in the worst cases death of the lawn not getting enough water. Keep in mind, most lawns can survive with little water, but will not green up. Instead they will remain dormant. A dormant lawn is much more susceptible to insect and disease damage since it is not strong enough to fend off such invaders. Normally, a dormant lawn recovers when moisture returns as long as it is kept free of insects and diseases.

Too much water: Deprives roots of oxygen, stunts growth, and promotes root and crown rot. If a yard is squishy when walked on, let it dry out then water less frequently. Correct drainage problems as necessary to prevent puddling in one area all the time.

Mountain High has an irrigation division to help you with all your lawn watering needs.

LIGHT PROBLEMS AND CORRECTIVE MEASURES

Heavy Shade: Most lawns will be thin in shaded areas. Selective pruning of tree and shrub branches may let in enough extra light to promote grass growth.  There are also shade tolerant turf grasses which grow better in heavily shaded areas. However, the lawn will never be as think under heavy shade as it will be in well sunlit areas.

Mountain High offers top quality overseeding and can mix and match seed types to give the lawn the best chance given the shade conditions.

Mowing Height:

Mow lawns at 2” to 3” normally and set the mower height to maximum in hot, dry weather.  At all costs avoid “scalping” the lawn. Colorado simply does not have the proper weather for a lawn to flourish if it is moved too low.

NOTE: Remove no more than 1/3 of total length on any one cutting. If grass gets very long, remove grass in stages with a two to three day time span between cuttings to prevent stress.

Contact us today if you have any questions about your lawn! Call us at 303.232.0666 or send us an estimate request below:
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Your Landscape’s Soil Quality

Soil Quality in DenverDo you know your landscape’s soil quality? Isn’t Mother Nature magnificent! Our landscapes are coming back to life every day! It is crucial for you to take advantage of this springtime to ensure the best results for your yard’s health all summer long. Promoting soil quality should be part of your landscape care program. The benefits of improving soil quality include, but are not limited to, increased root density, improved drought resistance, vigorous growth, increased leaf density, flower retention, increased fruit production, and vibrant fall color.

In Colorado, our plants have to deal with extreme weather conditions, so it’s important to implement a program to improve the soil that supports our plants every day. Soil improvement programs should be tailored to each specific site. For example, a program for heavy clay soil with high salt levels should include amendments that focus on restructuring the soil and leaching salt. Some of the most common soil improvement products include epsom salt, gypsum, sulfur, chelated iron, blood meal, diatomaceous earth, compost tea, Revive, humic acid, fulvic acid, Superthrive, compost, and mycorrhizae fungi.

Soil sampling and analysis is the first step in any soil improvement program. It is vital to know what you have in your soil before you start trying to change it. Our Arborists are trained and experienced in evaluating soil health, and we are happy to help you outline a program to ensure your landscape is as healthy and vibrant as possible. Get in touch with us anytime.

Contact us today if you have any questions about your soil! Call us at 303.232.0666 or send us an estimate request below:
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Recommended Trees to plant in Colorado Springs

Trees to plant in Colorado Springs

Recommended trees for spring planting in Colorado Springs:

Bigtooth/Canyon Maple (Acer grandidentatum, above left) – The Canyon Maple is native to many parts of western Colorado and is very tolerant of our soils and climate. It has splendid fall color. The smaller, compact size of this tree also adds another small tree to your palette. It comes in a multi-stem shrub or in tree form. It isn’t a common tree at the commercial nurseries either so it may take a little work on your part to find one.

Southwestern White Pine (Pinus strobiformus, above right) – This tree is found in the southwestern part of the state in its native habitat on ridges, slopes and canyons and grows in mixed stands up to the timberline. It is also planted in urban landscapes. It grows at a moderate rate in a variety of soils, preferring sunny sites and loamy soils and disliking poorly drained soils. With its soft bluish-green foliage it is a good alternative to other pines.

Working with and maintaining your landscape is a continuing and long-term process. Mountain High can help you in caring for your trees and planning for your landscape.

Give us a call at 719.444.8800 or send us an estimate request online »

Drip Irrigation in Denver

Drip Irrigation Service DenverAs the weather starts getting warmer and we start turning on our sprinkler systems, remember to do a thorough inspection of all of the heads and check the entire yard for leaks. After walking through the system one zone at a time checking for misaligned heads, improper spray patterns or small leaks, be sure not to forget about any drip zones that you may have.

Drip irrigation is always the most difficult to determine whether there are any leaks or if all of the plants are getting adequate water. Typically, if you have run through your drip zones and found no problems the best course of action to be certain of there being no issues is to run the drip zones for a full cycle or two to help identify any problem areas. Drip irrigation is measured in gallons per hour, where your lawn irrigation is measure in gallons per minute. This is why a drip zone may need to run for a longer period of time to identify potential problems.

Be conscientious about how long each zone needs to run for to provide adequate water for your lawn and plants. Traditional spray heads can run for 10 -20 minutes, drip can run from 40 – 60 minutes, three times a week. Soil conditions, slope, exposure, time of year and layout of system will all have an impact on how long each zone should run.

Contact us today if you have any questions about getting your irrigation system in tip-top shape! Call us at 303.232.0666 or send us an estimate request below:
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Drip Irrigation Service in Denver

Denver Lawn Fertilization in the Spring

Denver Lawn FertilizationLet us help you get your lawn ready for FUN!

Yay! It’s finally April and a great time to start planning your family’s springtime and summertime FUN outdoor activities.

We know that it’s on your To Do List to start getting your grass green and healthy, planting your flower beds and vegetable gardens, getting your sprinkler system turned on, your lawn mowers, edger’s, aerators and blowers dusted off and working correctly.

With all of this to get done, why not let our team of Lawn Care Professionals sign you up to our Early Bird Lawn Special and take care of getting the pre-emergent on your lawn NOW to fight problems like crabgrass and dandelions. It’s also time to fertilize your lawn to get a good jump start before the heat of summer hits.

Denver Organic Lawn Fertilization CompanyWe have several lawn programs depending on your needs, so let us be part of your lawn’s future to ensure that you have both a healthy and beautiful lawn throughout the year.

Call us today at 303.232.0666 to get signed up, or fill out our estimate request form and be sure to mention “Early Bird Lawn Special” to get the first treatment for $24.95*. Read more »

Benefits of having a healthy lawn:

  • A well cared for lawn can significantly increase property values.
  • A healthy lawn is of utmost importance to our environment.
  • A 50-foot by 50-foot lawn produces enough oxygen for a family of four.
  • Lawns cool the atmosphere. Eight healthy front lawns have the cooling effect of 70 tons of air conditioning, which is enough for 16 average homes.
  • Grass converts carbon dioxide to oxygen, a process that helps clear the air.
  • Thick, healthy grass slows water runoff, removing contaminants and trapping soil. Fresh, filtered water returns to the underground water supply.

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Denver Lawn Fertilization EmployeeLast October, Alex moved to Denver from Miami, Florida where he was a firefighter – so he could be with his girlfriend, Francesca. He was referred to Mountain High by one of our long term employees (Jerry) who told him what an awesome company MHT was to work for. Now he is busy working with us as a Lawn Technician and agrees that this is a great company. When not out in nature with his dog, Colt, Alex likes to work out, lift weights and hang with his girlfriend. What a nice guy to add to our crew!’

Let us take you to a ballgame!

Mountain High Tree is proud to be a sponsor of the baseball season with 850 KOA radio. We’re excited for our Ballgame Contest — if you “Like” us on Facebook, you can enter to win a VIP visit for 2 guests to the 850 KOA Broadcast booth to meet Jack Corrigan and Jerry Schemmel, plus a $75 Gift Certificate to Blake Street Tavern (Denver’s BEST Sports bar, just 1 block north of the ball field).

Enter our Contest below:

Win Rockies Tickets

Listen to the games – click here!

Did you know that Mountain High Tree takes care of the native trees in behind the center field wall?  Behind the center field wall is a Rocky Mountain landscape – the area features a waterfall, fountains, and Colorado native trees including Colorado Spruce, Pinon Pine, Bristlecone Pine, Con Color Fir, Limber Pine, Gamble Oak and Curl Leaf Mahogany. The decorative rocks are also native, including Navajo ruby sandstone and granite marble river boulders.

We’re proud to be the caretakers of these majestic beauties, so make sure to enjoy the greenery, and, after a home run or win keep an eye out for the fountains to shoot high into the air over the trees…. GO TEAM!