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Top Lawn Fertilization & Weed Control in Kent, Washington Ranked
A healthy, vibrant lawn in Kent requires a consistent, science-backed approach to feeding and weed management. Lawn fertilization provides the essential nutrients your grass needs to grow thick and resilient, while targeted weed control prevents invasive plants from competing for resources. This guide explains the fundamentals of lawn nutrition and weed suppression for Kent's unique climate, helping you understand the services available to maintain a beautiful yard throughout the seasons.

North East Landscaping Services
12259 155th Ave SE, Renton, WA 98059
North East Landscaping Services is a family-owned landscaping company with over 20 years of experience serving residential and commercial clients in Seattle, WA. They provide a comprehensive range of outdoor services including lawn care, fertilization, weed control, sod and artificial turf installation, fence and deck construction, landscape lighting, tree services, yard drainage, sprinkler installation and repair, as well as hardscaping like pavers and retaining walls. The company emphasizes quality workmanship and building lasting relationships with clients, handling projects of all sizes with care and honesty.
Augusta Lawn Care of Redmond
6335 180th Pl NE Suite #544, Redmond, WA 98052
Augusta Lawn Care of Redmond is a lawn care company based near Seattle, WA. They provide lawn mowing, fertilization, and weed control services to maintain healthy and attractive lawns. The company is fully insured and operates with set office hours during the week and on Saturdays.
Ballinger Landscaping
20234 20th Pl NE, Shoreline, WA 98155
Ballinger Landscaping is a landscaping company based in the Ballinger neighborhood of northeast Shoreline, Washington, serving the Seattle, WA area. They offer a full range of landscaping services including lawn care, garden design, seasonal maintenance, plant installation, pressure washing, property cleanups, and commercial and HOA landscape maintenance. Their expertise includes creating low-maintenance landscapes that thrive in the local climate, focusing on both residential and commercial properties to enhance curb appeal and outdoor space functionality.

Spring Green
6830 NE Bothell Way STE C - PMB 271, Kenmore, WA 98028
Spring Green is a locally owned lawn care and tree service company serving the Seattle, WA area. Since 2008, they have provided tailored lawn fertilization, weed control, pest control, and tree care services including core aeration, overseeding, lime treatment, and crane fly control. Their service area includes Everett, Marysville, Bothell, Lake Stevens, and nearby communities. Spring Green focuses on maintaining healthy lawns with treatments for common weeds and pests, as well as tree removal and stump grinding.
Augusta Lawn Care Services
5280 SE Mile Hill Dr, Port Orchard, WA 98366
Augusta Lawn Care Services is a lawn care company based in Seattle, WA. They provide a range of lawn care services including lawn mowing, fertilization, and weed control. The company is fully insured and operates with regular business hours throughout the week.
Understanding Kent's Lawn Environment
Successful lawn care in Kent starts with knowing what you're working with. The city's climate and typical grass types dictate a specific care regimen.
Common Grass Types in Kent
Residential lawns in Kent primarily feature cool-season grasses, which thrive in the Pacific Northwest's cooler temperatures and periods of rain. The most common varieties you'll find are Kentucky Bluegrass, various Fescues (both tall and fine), and Perennial Ryegrass 1 2 3. These grasses grow most vigorously in the spring and fall and can go semi-dormant during the hot, dry weeks of summer. Understanding that you have a cool-season lawn is the first step to proper fertilization and weed control timing.
The Role of Soil Health
Beneath the grass, soil health is paramount. Many areas in Kent have clay-heavy soil, which can compact over time, limiting root growth and the effectiveness of fertilizers and water. A simple soil test, available through local extension services, can reveal your soil's pH and nutrient levels, allowing for a customized feeding plan. Healthy soil supports deeper roots, which in turn creates a lawn that is more drought-tolerant and better at outcompeting weeds naturally.
The Professional Lawn Care Program: A Seasonal Guide
Most professional lawn nutrition and weed management services in Kent are structured as multi-application annual programs. These are designed to deliver the right products at the optimal time for your grass's growth cycle. A typical program involves 4 to 6 applications spaced 4-6 weeks apart during the growing season to maintain consistent nutrient levels and year-round weed suppression 4 5.
Here's a breakdown of what a comprehensive, season-by-season lawn treatment plan typically looks like:
Early Spring (March - April)
This initial visit is critical for setting up your lawn for success. The focus is on applying a slow-release fertilizer to gently "wake up" the grass and promote healthy, steady growth. Equally important is the application of a pre-emergent herbicide, which creates a barrier in the soil to prevent crabgrass and other annual weeds from germinating 6. Tackling weeds before they emerge is far more effective than trying to eliminate them later.
Late Spring (May - June)
As temperatures rise and growth accelerates, a second round of fertilizer supports continued vigor. This visit often includes post-emergent herbicides to control visible broadleaf weeds like dandelions, clover, and plantain that may have broken through. This combination of feeding the grass and selectively targeting weeds helps your lawn thicken and fill in bare spots.
Summer (July - August)
The summer strategy shifts. Heavy fertilization is usually avoided during periods of heat and potential drought stress. The focus turns to monitoring and health maintenance, which may include targeted insect or grub control if needed. The best defense against summer weeds and stress is a deeply rooted lawn, which is built through proper care in the spring and fall.
Early Fall (September - October)
This is arguably the most important feeding of the year. A high-nitrogen fertilizer is applied to help the lawn recover from summer stress and, most importantly, to fuel strong root development. Healthy roots in the fall ensure better winter survival and a quicker green-up next spring. This season is also the ideal time for core aeration and overseeding, services often paired with fertilization to improve soil structure and introduce new grass seed 7.
Late Fall / Winter (November - December)
An optional late-season "dormant" feeding applies a winterizer fertilizer, which is typically higher in potassium. Potassium strengthens grass plants, improving their hardiness against cold, disease, and winter damage. This final application prepares the lawn for a dormant period and gives it a head start for the following spring.
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What to Expect: Services and Investment
When exploring professional lawn feeding and weed management, you'll encounter a range of service plans. A basic fertilization program provides scheduled nutrient applications, while a comprehensive program bundles fertilization with broad-spectrum weed control, and sometimes insect control, for a complete solution.
Understanding Service Costs
Pricing for professional lawn care in Kent depends primarily on your lawn's square footage, the frequency of service, and the specific treatments included. Companies typically offer a per-application cost or a discounted annual program price. Annual programs for a typical Kent lawn generally range between $250 and $1,000+ for the season 8 9 10.
| Service Tier | Average Cost Per Application | Estimated Annual Cost (4-6 applications) |
|---|---|---|
| Basic Fertilization Program | $65 - $100 | $250 - $700 |
| Comprehensive Program (Fertilization & Weed Control) | $75 - $150 (approx.) | $450 - $1,000+ |
| À La Carte Weed Control (single visit) | $50 - $100 | N/A |
Note: These are average estimates. Always request a personalized quote based on a property visit.
The Value of a Program Approach
Opting for an annual program offers several advantages over one-off treatments. First, it ensures your lawn receives care at each critical biological window throughout the year. Second, professionals can monitor your lawn's progress and adjust treatments as needed. Finally, program pricing usually provides a cost saving compared to scheduling each service individually 8. It's a proactive strategy for long-term lawn health.
Complementary Practices for a Healthier Lawn
While regular fertilization and weed control form the backbone of lawn care, integrating a few additional practices can dramatically improve your results.
Core Aeration
This process involves removing small plugs of soil from your lawn to alleviate compaction. It allows air, water, and fertilizer to reach the root zone more effectively. For Kent's often clay-rich soils, annual or biennial aeration is highly recommended, usually performed in the fall.
Overseeding
Overseeding is the spreading of new grass seed over an existing lawn. It helps fill in thin areas, improve density, and introduce more resilient grass varieties. When combined with fall fertilization and aeration, overseeding can transform a tired lawn into a thick, lush carpet that naturally resists weeds and disease.
Proper Mowing and Watering
Even the best fertilizer program can be undermined by poor mowing or watering. For cool-season grasses, mow high (around 3 inches) to encourage deep roots and shade out weed seeds. Water deeply and infrequently, aiming for about 1 inch of water per week, including rainfall, to train roots to grow downward.
Finding the Right Service for Your Lawn
With an understanding of what a complete lawn nutrition and weed suppression program entails, you can make a more informed decision. Look for providers who offer a free, on-site evaluation. A reputable professional will assess your grass type, soil conditions, weed pressure, and specific challenges before recommending a plan. Don't hesitate to ask about the specific products they use, their application schedule, and whether their approach is tailored to the Pacific Northwest's conditions. For science-based, local guidance, the Washington State University Extension office is also an excellent resource 11.
Frequently asked questions
Sources
Footnotes
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Pacific Northwest Lawn Care Schedule - TruGreen - https://www.trugreen.com/lawn-care-101/blog/lawn-care/pacific-northwest-lawn-care-schedule ↩
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Pacific Northwest Lawn Care Schedule - https://www.trugreen.com/lawn-care-101/blog/lawn-care/pacific-northwest-lawn-care-schedule ↩
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Lawn Care in Puyallup, WA from $55 | 6,000+ 5-Star Reviews - https://www.getsunday.com/local-guide/lawn-care-in-puyallup-wa ↩
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Fertilization, Weed Control, & Aeration in Lawn Care Program - https://coloniallawn.com/understanding-fertilization-weed-control-and-aeration-in-lawn-care-programs/ ↩
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Affordable Lawn Care Plans & Pricing Options - TruGreen - https://www.trugreen.com/products-and-services ↩
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When to Fertilize Lawn for the Best Results - https://completelandscapingservice.com/blog/when-to-fertilize-lawn-for-the-best-results/ ↩
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Effective Fall Overseeding Techniques - https://fairwaylawns.com/effective-overseeding-techniques-for-fall-lawn-renewal/ ↩
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average cost of lawn fertilization service: 7 Best 2025 Wins - https://ajmgrounds.com/average-cost-of-lawn-fertilization-service/ ↩ ↩2
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How Much Does Lawn Fertilization Cost in 2026? - https://lawnlove.com/blog/lawn-fertilization-cost/ ↩
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Elm Dirt Lawn Care Guide: Natural & Sustainable Lawn Solutions - https://www.elmdirt.com/pages/lawn-care-guide ↩
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LAWN CARE CALENDAR | Wsu - https://s3.wp.wsu.edu/uploads/sites/2071/2013/12/Lawn-Care-Calendar.pdf ↩