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SprayTech: tree spraying, fertilizing, weed control
Free Estimate
A SprayTech technician spraying tall pine trees from the company spray truck on a wooded property
Castle Rock & the Front Range

Colorado noxious weeds control and tree health care services

Preventive tree spraying, deep root care and weed management programs for South Metro Denver properties of every size: residential, commercial and industrial.

Get a Free Estimate Find your tree's pests

Prefer to talk it through? 720.248.0000

SprayTech crew at work

What we take care of

Healthy trees and weed-free ground, from one local team

At SprayTech we offer Colorado noxious weeds control and tree health care services to the South Metro Denver and the Front Range. We develop comprehensive tree and shrub insect control, tree disease control, tree health care, and noxious weeds management programs that will fit any size property or budget: commercial, industrial or residential. We specialize in:

A technician directing a high-reaching spray stream into the crown of a tall ponderosa pine
Preventive spraying reaches the full height of mature pines

Tree health care services

Our tree management goal is to keep your trees healthy and protected from diseases and insect attacks. Drought, heat, and other stresses make trees vulnerable. Even healthy trees are susceptible to pests when populations reach high numbers. Preventive care and spraying is the best defense for your most valuable trees. Deep root watering and deep root fertilization treatments boost your trees’ health so they are better able to naturally fight off harmful insects.

SprayTech Tree Services Include:

See pests by tree type
Tree & pest finder

What is threatening the trees on your property?

Pick the kind of tree you are worried about to see the insects and diseases we treat on it, with a link to learn more about each.

The SprayTech spray truck parked below the butte that gives Castle Rock its name Based in Castle Rock
Why preventive care

A beetle the size of a rice grain can take a tree you spent years caring for

Before starting SprayTech, our team spent more than 10 years in the environmental horticulture industry. We watched customers invest real money in pruning and fertilizing, only to lose entire trees to something as tiny as an Ips or mountain pine beetle.

We knew that with the right information it was possible to save trees and protect local ecosystems. So we made preventive tree spraying and noxious weed control the focus of the business, became licensed in those areas, and committed to continually updating our knowledge.

We rely on SprayTech every year to spray our trees against mountain pine, Ips beetle, and other tree diseases. We have not lost a tree on our property yet.

Steve L., SprayTech customer · Read more reviews
Weed management

The right method depends on the weed and the ground it is growing in

A pasture full of musk thistle, a gravel lot and a front lawn need different approaches. Here is how the four options in a SprayTech weed management plan compare.

A flowering musk thistle, a Colorado noxious weed, growing in a dry Front Range field
Comparison of manual, chemical, biological and combined weed control
MethodWhat it involvesWhere it tends to fitThings to know
ManualPhysically removing weeds by pulling, digging or cutting.Small, isolated patches and areas near plants you want to protect.Labor intensive on large acreage, and weeds with deep roots can return.
ChemicalApplying herbicide selected for the target weed and site.Established infestations, larger fields, rangeland and bare ground.Product and timing matter. Application is regulated in Colorado and should be done by licensed applicators.
BiologicalUsing natural enemies of a weed, such as insects, to suppress it over time.Large or hard to reach infestations where long-term suppression is the goal.Works gradually and is aimed at reducing a population, not wiping it out quickly.
CombinationPairing two or more of the methods above in one plan.Most real properties. Our management plans often use more than one method.We assess your property first, then recommend the mix that fits the infestation.

Why noxious weeds matter. Noxious weeds are invasive plants that crowd out native vegetation and forage. Treating them is part of being a good neighbor, since seed from an untreated field does not stay put. See our fields and noxious weed control page for the types of land we treat.

RangelandPasture and open range weed programs Beds & bordersLandscape bed and border weed spraying Bare groundLots, fence lines and areas that must stay clear Scrub oakControlling scrub oak in pastures and native areas
Deep root care

Stronger roots, better defenses

A well watered, well fed tree is better able to fight off insects on its own. These two services support the spraying program from underground.

A SprayTech technician deep root watering a mature tree in a rock-mulched landscape bed

Deep root watering

Drought and heat are two of the biggest stresses on Front Range trees. Deep root watering delivers water down to the root zone during dry periods, when surface watering and rain are not reaching it.

Tree watering service Tree watering schedule
A technician applying deep root fertilizer at the base of a large spruce tree

Deep root fertilization

Deep root fertilization places nutrients where roots can use them. Paired with watering, it is one of the ways we help trees stay healthy enough to resist insect attacks.

Tree fertilization service Request service
About SprayTech

The specialist on the phone is the one who visits your property

SprayTech is based in Castle Rock and serves residential and commercial customers across South Metro Denver. We take the time to understand each property's individual needs, and the people who answer your call are the same specialists who visit and assess your trees and land.

Our customers are mostly homeowners, along with homeowners associations, municipal entities and commercial property. We also support several local charities, including those that support veterans.

  • Qualified CSU Extension Master Gardeners
  • Members of ISA
  • Members of CWMA

Read our story

A SprayTech technician driving a spray-equipped ATV across a pine and scrub oak property
Equipment sized for acreage and tight residential lots
10+years in the green industry before founding SprayTech
70%of our accounts are residential homeowners
18Front Range communities served, plus statewide for big projects
Cashand checks accepted
Customer reviews

What SprayTech customers say

Our token ash in the front of the house looks much healthier than all the other ashes on our street.

Paula B., deep root watering and fertilization customer

All customer reviews Leave a review

  • The pines on the property we bought were infested with beetles. After removing all the dead trees we decided we need to prevent any further loss. We have been spraying for beetles twice a year since then with the help from SprayTech. We are very happy with the prices especially since we have over 80 trees.

    Jim T. Beetle prevention

  • SprayTech was the only company who returned our phone call about treating our field for weeds. It was middle of the summer and we couldn't get hold of anybody. We are very happy with the service and highly recommend it.

    Dave R. Field weeds

  • SprayTech has been taking care of our trees for years and they look great. Professional and knowledgeable crew.

    Sherry P. Tree care

  • Thank you for helping us with the weeds in our yard. Your program works great. We wouldn't hesitate to hire you again.

    Bill and Susan W. Yard weeds
Map of Front Range communities SprayTech serves, from Louisville in the north to Monument in the south, with Castle Rock at the center I-25
HeadquartersService community
Service area

Serving the Front Range from Castle Rock

SprayTech is a tree service and weed control company servicing Front Range communities across Douglas, Arapahoe, Denver, Jefferson, Elbert, El Paso and Boulder counties, and statewide for big projects.

    Don't see your town? Call 720.248.0000 and ask. Larger projects are welcome statewide.

    Free estimates

    Tell us what you are seeing on your trees or land

    If you have any questions about SprayTech, the services we offer, or would like to get a free estimate, contact us today by filling out our form, or call us at  720.248.000.  Our friendly staff are here to help you with all of your weed control and tree health care needs.

    Request a Free Estimate Call 720.248.0000

    Or email Office@TreesandWeeds.com