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Best lawn irrigation specialists near Boulder, CO

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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon126
    Verified lawn irrigation services reviews

Top-Rated Lawn irrigation specialists in Boulder - Updated Nov 2026

Avatar for Glacier Irrigation, LLC
Glacier Irrigation, LLC
5.0(
34
)
Lawn and Garden Sprinkler System - RepairLawn and Garden Sprinkler System - InstallLawn and Garden Sprinkler System - Repair - For Business+1 more

Serving Boulder, CO and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"Glacier Irrigation went above and beyond to install a new 11 head 2 zone irrigation system with a Rachio timer. This was a new instal that required piping ran in the house to the main line. Sam, the owner, used the best available equipment to instal the lines outside so they did not tear up the grass like all other installers would do. He uses high efficient sprinkler heads to get proper coverage without eating into the monthly water bill. Sam has an excellent plumber, Liberty, who he uses to complete any of the plumbing that needs to be done from the house to outside. The best part of Glacier irrigation is the communication you will receive from Sam. So many companies don't answer their calls, but he is responsive and quick to give an appraisal. I will continue to recommend Glacier irrigation to anyone looking for their lawn to come back to life."
New High Efficiency System!
New System Install. Property was a dirt lot before
New 5 Zone system install
New system install.
Ditch Witch VP30 Trench-less Vibratory Plow!

+12

Response time1 day
Response rate89%
5 neighbors recently requested a quote
Avatar for Hamilton Irrigation Company
Hamilton Irrigation Company
4.6(
156
)
Sprinkler System for Lawn and Garden - Winterize or Activate

Serving Boulder, CO and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"I would highly recommend Hamilton irrigation. Response was quick and repairs completed same day. Shawn was very friendly and very HONEST about repairs and cost which is important to me. I've added Hamilton to my contact list for sprinkler repairs!!"
Response time3 hrs
23 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for LawnTender - Organic Lawn and Sprinkler Services
LawnTender - Organic Lawn and Sprinkler Services
4.9(
33
)
Sprinkler System for Lawn and Garden - Winterize or ActivateLawn and Garden Sprinkler System - RepairLawn and Garden Sprinkler System - Repair - For Business

Serving Boulder, CO and surrounding areas

Approved

In business since 2023

Free estimates

Small jobs welcome

"Benjamin has excellent communication and has done better work than any lawn care professional that I have hired before. If you are looking for high quality work and someone who follows through with commitments, LawnTender should be the first place you call!"
Response time2 days
73 neighbors recently requested a quote
Recommended by45%of homeowners
Avatar for Great Lawns Landscaping and Snow Removal, LLC
Great Lawns Landscaping and Snow Removal, LLC
4.9(
40
)
Lawn and Garden Sprinkler System - InstallLawn and Garden Sprinkler System - Install - For BusinessLawn and Garden Sprinkler System - Repair+1 more

Serving Boulder, CO and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"David and his son, David (Great Lawns Landscaping) upgraded a very old distribution box of our irrigation system, which was installed personally by a previous owner, so that it would operate like a brand new system. They took on a job that most irrigation contractors would only shake their heads. Not only did they intelligently determine how to make a tricky repair, but they did it right away at a very reasonable cost. They will be my first choice for irrigation issues in the future. I highly recommend them."
Response time8 hrs
Response rate86%
Recommended by100%of homeowners
Avatar for A-Z Services LLC
A-Z Services LLC
5.0(
15
)
Sprinkler System for Lawn and Garden - Winterize or ActivateLawn and Garden Sprinkler System - InstallLawn and Garden Sprinkler System - Install - For Business

Serving Boulder, CO and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"A-Z Services has provided me with excellence service for many years. They have provided sprinkler startup and blowouts, sprinkler repair, landscape work, tree stump removal, lawn mowing, and lawn aeration. They have helped me urgently when needed and have been extremely reliable. I wouldn't think of using anyone else."
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7 neighbors recently requested a quote
Recommended by14%of homeowners
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Lawn Irrigation FAQs, answered by experts

If you use a starter fertilizer designed for this purpose, you can overseed and fertilize at the same time. If you opt to use a fertilizer for established grass or one with a weed control component, it's best to wait at least four to eight weeks after seed application to allow the new grass to take hold and establish itself. 

Yes, but the best approach is to apply fertilizer well before you actually sprinkle the seeds. Apply fertilizer with an NPK ratio somewhere around 10-10-20, or 10-10-10, depending on soil test results and the type of grass you're planting, about six to eight weeks before planting grass seed. This mix added to loosened soil will give the grass seed its best chance of getting off to a solid start. 

Many homeowners in warmer climates like this resilient, hearty grass because it can tolerate excessive heat and drought while developing into a lush lawn. Unlike other grasses, Bermuda grass grows and spreads quickly and can withstand excessive foot traffic. But whether Bermuda grass is good for lawns may depend on your geographic location, as this grass has a low tolerance for cooler temperatures, which causes it to go dormant and turn brown in the winter months.

The best hardiness zones for St. Augustine grass are USDA growing zones 8, 9, and 10. However, with a bit of extra attention, it'll also grow well in zones 7, 11, and 12.

Whether or not grass will fill in bare spots itself depends on the type of grass you have. For example, grass with rhizomes (e.g., Bermuda grass) and stolons (e.g., Saint Augustine grass) will naturally fill in bald spots as it spreads laterally. However, clump-forming grasses will not spread. 

The Boulder, CO homeowners’ guide to lawn irrigation services

From average costs to expert advice, get all the answers you need to get your job done.