Mercer Island, WA

Green Day Landscape

4.7 (58 reviews)

Green Day Landscape serves Mercer Island and the surrounding Washington area with professional lawn care services. With strong customer reviews from local clients, they're a well-established choice for residential landscape maintenance. More information is available on their website.

Service area: Serves the greater Mercer Island and greater Seattle area.

(206) 931-0629 Website View on Google Maps
11121 SE Kent-Kangley Rd, Kent, WA 98030, USA

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Lawn Care in Mercer Island

Green Day Landscape serves customers in Mercer Island, WA, which sits in the Pacific Northwest Oceanic climate zone. Lawn care timing here means working with Tall fescue and Perennial ryegrass grasses through a march through november mow season.

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Mow season
Pre-emergent
Fertilize
Aeration
Overseeding
Dormancy
Mow season
Pre-emergent crabgrass
Fertilization application
Aeration
Overseeding
Dormancy
Mow frequency
Weekly from March through November. Avoid mowing during sustained rain — wait for dry ground to prevent compaction and turf damage.
Mow height
2.5 to 3 inches. Raise to the higher end in summer to shade out moss and weeds.
Pre-emergent timing
Late February to mid-March
Aeration window
September to October — wet PNW soil aerates cleanly in fall

What to know about hiring a Mercer Island pro

PNW lawns battle moss year-round in shaded, wet conditions. Apply moss control treatments in early spring before the lawn fully greens up. Red thread fungus appears during prolonged cool wet stretches. Slugs and crane flies are common pest pressures. Tall fescue and perennial ryegrass dominate because they tolerate constant moisture and cooler temperatures.

When evaluating Green Day Landscape or any other lawn care provider in Mercer Island, ask how they handle the local timing windows above — a pro who can explain their pre-emergent schedule and seasonal approach is one who knows the WA climate.

Lawn care licensing in Washington

Washington commercial pesticide applicators are licensed by WSDA Pesticide Management Division under the Landscape Pest Control (07) category. Washington's wet climate west of the Cascades brings persistent moss and fungal pressure, while eastern WA cities (Spokane, Tri-Cities) have desert irrigation challenges.

What to ask Green Day Landscape

Confirm WSDA Landscape Pest Control credentials. Ask how they handle the local microclimate — pros east and west of the Cascades work with fundamentally different turf challenges and should be able to explain why their approach varies.

Licensing administered by the Washington State Department of Agriculture (WSDA). Verify any commercial applicator credential through the WSDA public license lookup.

Lawn Care FAQs for Mercer Island

Common questions homeowners ask about lawn care in Mercer Island.

When does mowing season start in Mercer Island, WA?
March through November
How often should I mow my lawn in Mercer Island?
Weekly from March through November. Avoid mowing during sustained rain — wait for dry ground to prevent compaction and turf damage.
What is the best mowing height for a lawn in Mercer Island?
2.5 to 3 inches. Raise to the higher end in summer to shade out moss and weeds.
When should I apply pre-emergent crabgrass control in Mercer Island?
Late February to mid-March
When is the best time to aerate a lawn in Mercer Island?
September to October — wet PNW soil aerates cleanly in fall
When should I overseed my lawn in Mercer Island?
Mid-September
How much water does a lawn in Mercer Island need?
Natural rainfall typically covers most needs. Some supplemental irrigation needed during the July-August dry stretch.
Do I need a sprinkler system for a lawn in Mercer Island?
Helpful but not required for most established lawns. Important during the July through August dry stretch.
What grass types are common in Mercer Island, Washington?
Tall fescue, Perennial ryegrass, Fine fescue, Bentgrass. Moss is the dominant pressure in wet PNW climates. Annual moss control treatments in early spring are standard. Avoid scalping — keep mow height at 2-3 inches to shade out moss and weeds.
What pests, diseases, and local regulations affect lawns in Mercer Island?
PNW lawns battle moss year-round in shaded, wet conditions. Apply moss control treatments in early spring before the lawn fully greens up. Red thread fungus appears during prolonged cool wet stretches. Slugs and crane flies are common pest pressures. Tall fescue and perennial ryegrass dominate because they tolerate constant moisture and cooler temperatures.

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Nearby cities in Washington

Seattle, WABellevue, WARedmond, WAKirkland, WASammamish, WABothell, WAIssaquah, WARenton, WA

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