
Find the Best Lawn Fertilization & Weed Control for Your Business
No obligation • Fast responses • Nationwide coverage

Why you can trust Landscape Atlas
Landscape Atlas is a leading United States resource for evaluating landscaping, lawn care, and outdoor service providers. Our team researches each category in depth, focusing on service quality, safety, and customer experience. Listings and rankings are based on independent criteria and user feedback, and companies cannot pay to influence our assessments or recommendations.
Search providers near you
Top Lawn Fertilization & Weed Control in Thornton, Colorado Ranked
A healthy, vibrant lawn in Thornton requires a targeted approach to feeding and weed management. Professional lawn fertilization and weed control services provide the expertise and seasonal timing necessary to nurture the specific grasses that thrive in our region. This guide explains the local lawn care essentials, from grass types to annual treatment schedules, helping you understand your options for maintaining a resilient and beautiful yard.

Weed Man Lawn Care
11427 W Interstate 70 Frontage Rd, Wheat Ridge, CO 80033
Weed Man Lawn Care is a lawn care company serving Denver, CO. They offer services including lawn fertilization, weed control, aeration, and pest management to improve lawn health and appearance. With over 50 years of experience, Weed Man uses proven methods tailored to Denver's soil and climate conditions to maintain healthy lawns.
NationScapes
12600 W Cedar Dr, Lakewood, CO 80228
NationScapes is a lawn care and landscaping company serving Denver, CO, and the surrounding communities including Lakewood, Littleton, Arvada, and Golden. They offer a wide range of services such as lawn mowing, fertilization, weed control, sprinkler installation and repair, landscape lighting, tree and shrub care, and seasonal winter protection. Their certified technicians use modern techniques and products to maintain healthy lawns and efficient irrigation systems. Established in 1947, NationScapes brings decades of experience and a team of skilled professionals to deliver personalized service plans tailored to customer needs. They provide seasonal packages and offer same-day emergency sprinkler repairs when available.
Joshua Tree Experts
8173 Carder Ct, Littleton, CO 80125
Joshua Tree Experts is a lawn care and tree service company based in Aurora, CO. They offer a range of services including lawn mowing, fertilization, weed control, tree removal, stump grinding, and landscaping. The company focuses on plant health care and outdoor living space maintenance, combining multiple green industry services to meet local needs. Joshua Tree Experts aims to build a strong team of professionals dedicated to serving the Denver community.
Happy Roots
11727 Salem St, Henderson, CO 80640
Happy Roots is a family-owned lawn care company based near Denver, CO, serving the northern suburbs with lawn, landscape, and sprinkler services. Established in 2005 in Thornton, Colorado, they offer lawn mowing, fertilization, weed control, landscaping, and sprinkler installation and repair. The company emphasizes personalized service and has been recognized for its lawn care and customer service, including multiple Angie's List Super Service Awards and a Dave Ramsey Entreleadership scholarship.
Colorado Sprinkler Repair
12412 York St, Thornton, CO 80241
Colorado Sprinkler Repair is a family-owned lawn care and sprinkler service company based in Denver, CO. They provide a range of services including sprinkler system installation, repair, maintenance, lawn mowing, fertilization, aeration, weed control, and landscaping for both residential and commercial properties. With nearly three decades of experience, they focus on helping customers maintain healthy lawns in the semi-arid climate of the North Denver Metro area. Their expertise includes commercial irrigation and sprinkler blowout services, and they offer convenient packages combining sprinkler and lawn care. The company guarantees repairs at no extra cost if issues arise after service and commits to responding to customer requests within 24 business hours.
Understanding Thornton's Lawn Grasses
The foundation of effective lawn care in Thornton is knowing what type of grass you're growing. Most residential lawns here are composed of cool-season grasses, which are perfectly adapted to the Colorado climate with its cold winters and warm, dry summers 1 2 3. These grasses grow most vigorously in the spring and fall.
Kentucky Bluegrass is the most common lawn grass in Colorado. It forms a dense, lush turf that can self-repair through underground stems called rhizomes. To maintain its iconic green color, it requires consistent moisture and regular fertilization 4 5 6.
Tall Fescue is another popular choice, prized for its deep root system that makes it more drought-tolerant and better suited for shaded areas than Kentucky Bluegrass. It grows in clumps and generally requires less intensive maintenance 5 7 8.
Perennial Ryegrass is often included in seed mixes because it germinates quickly, helping to establish a new lawn or fill in bare spots. It blends well with Kentucky Bluegrass but doesn't contribute to thatch buildup 4 6.
For homeowners seeking a low-water, native alternative, warm-season grasses like Buffalograss and Blue Grama are options. However, they enter dormancy and turn brown with the first frost, staying tan until late spring, which is a trade-off for their water savings 1 4.
The Professional Treatment Schedule: A Seasonal Guide
A one-size-fits-all approach doesn't work for lawn nutrition and protection. Professional programs are built around a 4 to 6-application schedule timed to the life cycle of your grass and common weeds 9 10 11 12. This strategic timing maximizes grass health and minimizes weed infestations.
Early Spring (March - April)
The season kicks off with a critical application of pre-emergent herbicide. This creates a barrier in the soil that prevents crabgrass and other annual weed seeds from germinating. This treatment is often combined with a light, balanced fertilizer to give the lawn a gentle green-up after winter without encouraging excessive top growth that could be damaged by a late frost 13 14.
Late Spring to Early Summer (May - June)
As soil temperatures rise, the focus shifts to strengthening the lawn before the summer heat. A fertilizer application provides the nutrients needed for robust growth. Post-emergent weed control is also performed at this time, using targeted spot treatments to eliminate broadleaf weeds like dandelions and clover that have already emerged 10 15.
Summer (July - August)
The peak of summer is a period of stress management. Fertilization, if done, typically involves a low-nitrogen product or a soil conditioner designed to enhance root health and improve moisture retention without pushing lush growth. The primary focus is on proper irrigation. Weed control continues as needed with spot treatments 10 11.
Fall (September - November)
This is the most important feeding season for cool-season grasses. A fertilizer application, often higher in nitrogen, encourages deep root development, which is essential for winter hardiness and a strong start the following spring. Fall is also the ideal window for core aeration and overseeding to repair summer damage and improve lawn density, making it a perfect time for bundled service plans 10 13 14.
Find the perfect lawn fertilization & weed control for your needs
Get personalized recommendations and expert advice
What to Expect: Services and Investment
Professional lawn care providers in Thornton typically offer annual plans that bundle fertilization and weed control into a convenient, scheduled program 16 17. This ensures your lawn receives the right care at the right time without you having to track the calendar.
Understanding Costs
Pricing is usually based on the size of your lawn and the comprehensiveness of the plan.
- Per-Application Cost: For a standard residential property, a single visit for fertilization and weed control typically ranges from $50 to $100 18 19 20.
- Annual Plan Cost: A basic annual program for a typical yard (roughly 1/4 to 1/2 acre) generally falls between $300 to $700 for the season 18 19 21.
- Comprehensive Plans: Programs that include additional services like aeration, overseeding, grub control, and soil amendments can range from $600 to over $1,000 annually 22 23.
For example, local providers may offer tiered plans. A "Bronze" plan with 4 fertilizer/weed control applications and aeration might start around $61.60 per month, while a "Gold" plan with 6 fertilizer apps, 6 soil conditioner treatments, aeration, and overseeding could start at approximately $110.10 per month 9 24.
The Value of a Soil Test
For the most precise lawn care, consider starting with a soil test. The Colorado State University Extension offers testing services that analyze your soil's pH and nutrient levels 25. The results can reveal specific deficiencies or imbalances, allowing for a truly customized fertilization strategy that addresses your lawn's unique needs, potentially saving money and preventing over-application of products.
Key Benefits of Professional Lawn Care
- Expert Timing: Professionals understand the exact windows for pre-emergent weed control and the optimal fertilization schedules for Colorado's climate, which is crucial for effectiveness.
- Correct Product Selection: They choose fertilizers and herbicides formulated for cool-season grasses and the specific weed pressures in the Thornton area.
- Consistency: A scheduled program ensures your lawn doesn't miss a critical treatment, providing consistent nutrition and protection throughout the growing season.
- Problem Diagnosis: Trained technicians can identify issues like disease, insect damage, or soil compaction that might be hindering your lawn's health, recommending solutions beyond standard feeding.
Frequently asked questions
Sources
Footnotes
-
1521 - Choosing a Lawn Grass in Colorado - https://planttalk.colostate.edu/topics/lawns/1521-choosing-lawn-grass-colorado/ ↩ ↩2
-
Lawn Care in Thornton, CO from $55 | 6,000+ 5-Star Reviews - https://www.getsunday.com/local-guide/lawn-care-in-thornton-co ↩
-
Dormant Grasses - https://www.whygoodnature.com/dormant-grasses ↩
-
Best Lawn Grass Seeds For Colorado - Outsidepride.com - https://www.outsidepride.com/seed/grass-seed/State-Lawn-Guide/Colorado-Grass-Seed/ ↩ ↩2 ↩3
-
Grass Types That Grow Best in Colorado - Erbert Lawns - https://erbertlawns.com/lawn-care-tips/grass-types-that-grow-best-in-colorado/ ↩ ↩2
-
The Best Grass Types for Colorado: Pros, Cons, and Rankings - https://www.americanturfandtreecare.com/blog/best-grass-types-colorado ↩ ↩2
-
Colorado Springs Seasonal Lawn Care Guide for Turf Grass Success - https://tarvsturf.com/blog/colorado-springs-seasonal-lawn-care-guide-for-turf-grass-success/ ↩
-
New Lawns Planting Guide - https://www.bookcliffgardens.com/index.php/ask-an-expert/planting-guides/10-planting-guide/41-new-lawns-planting-guide ↩
-
Lawn Care Thornton, CO - https://coloradohappyroots.com/lawn-care-thornton-co/ ↩ ↩2
-
Happy Roots - Fertilizer Programs - Thornton Colorado - https://coloradohappyroots.com/fertilizer/ ↩ ↩2 ↩3 ↩4
-
The Importance of Proper Denver Lawn Fertilization | Mile Hi - https://milehiservices.com/importance-of-proper-lawn-fertilization/ ↩ ↩2
-
Fertilization & Weed Control Services - https://thelawnfirm.com/fertilization-weed-control-services/ ↩
-
The Best Colorado Lawn Care Schedule - https://lawnlove.com/blog/colorado-lawn-care-schedule/ ↩ ↩2
-
A Complete Colorado Lawn Care Schedule - https://healthylawn.net/blog/complete-colorado-lawn-care-schedule/ ↩ ↩2
-
Full-Service Lawn Care Charlotte NC | Indian Trail, Matthews - https://www.rkpreferredlandscaping.com/full-service-lawn-care/ ↩
-
Lawn Care Programs Thornton, CO | Grass & Lawn Care Services - https://lawndoctordenver.com/thornton-co/lawn-care-service/programs/ ↩
-
Lawn Fertilization Cost | Lawn Treatment Prices - https://www.fixr.com/costs/lawn-fertilization ↩
-
Lawn Care Pricing Chart: Your Guide to Fair Lawn Service Costs - https://invoicefly.com/academy/lawn-care-pricing-chart/ ↩ ↩2
-
Landscape Maintenance Cost in Colorado: Budgeting ... - https://www.easygreenlandscaping.net/landscape-maintenance-cost/ ↩ ↩2
-
Lawn Care in Thornton, CO from $55 | 6,000+ 5-Star Reviews - https://www.getsunday.com/local-guide/lawn-care-in-thornton-co ↩
-
How much does lawn care service cost? - Green Lawn Fertilizing - https://www.greenlawnfertilizing.com/blog/how-much-does-lawn-care-service-cost ↩
-
Average cost for weed and fertilizer treatments on a residential ... - https://www.facebook.com/groups/305770469602511/posts/2899885820190950/ ↩
-
How Much do Landscaping Services in Etobicoke Cost? - https://custodia.com/how-much-do-landscaping-services-in-etobicoke-cost/ ↩
-
Lawn Care Thornton, CO - https://coloradohappyroots.com/lawn-care-thornton-co/ ↩
-
Best Time to Fertilize Your Colorado Lawn - LawnStarter - https://www.lawnstarter.com/blog/colorado/when-to-fertilize-colorado-lawn/ ↩