Mountains on three sides

Hydroseeding in Issaquah, WA

Issaquah gets far more rain than Seattle, and many lots climb the lower slopes of the Issaquah Alps.

We walk your property first, then put the quote in writing at no charge
Seeding dates planned around Seattle's dry summer and wet winter
One crew for grading, seeding and sediment control

Hydroseed That Holds in Issaquah

Hydroseeding in Issaquah has to account for two things: slope and rain. The city sits in a valley at the south end of Lake Sammamish, with Cougar Mountain to the west, Squak Mountain to the south and Tiger Mountain to the southeast. Neighborhoods climb the lower slopes of Cougar and Squak. And the city's climate figures show about 62.19 inches of precipitation a year, with November alone averaging 10.12 inches.

Why the mulch matters more here

With that much rain, plain seed on a slope will move. On hillside lots we usually recommend a bonded fiber matrix or a high-rate hydromulch with tackifier, which sticks to the soil and resists the kind of steady rain Issaquah gets in late fall. On swales and drainage paths, erosion control blankets go down before the seed.

Salmon in the creek

The state-owned Issaquah Salmon Hatchery sits on Issaquah Creek and raises Chinook and Coho salmon. Sediment from a construction site or a bare yard ends up in streams like that. Silt fence, inlet protection and fast surface cover are the basics we use to keep runoff clean.

Valley floor vs hillside

Downtown and the valley floor are flatter, at about 62 feet, while hillside neighborhoods sit much higher. Valley lots usually just need good grading and topsoil before a lawn. Hillside lots often need slope stabilization first and a lawn only on the flatter areas.

Big redevelopment ahead

A 120-acre gravel quarry north of downtown is planned for redevelopment into residential and commercial areas over 30 years. Phased projects like that need temporary hydroseeding on stockpiles and graded pads between phases, then permanent seeding at the end.

Typical Issaquah jobs

Bonded fiber matrix on cut slopes
Lawn hydroseeding on valley lots
Silt fence near creeks
Temporary seeding on stockpiles

Get a free estimate or call (206) 208-7934.

Issaquah Terrain and Climate

Issaquah Alps. Cougar Mountain lies to the west, Squak Mountain to the south and Tiger Mountain to the southeast; Cougar and Squak have homes on their lower slopes.
Heavy rainfall. Annual precipitation averages 62.19 inches, with November the wettest month at 10.12 inches and August the driest at 1.29 inches.
Salmon hatchery. The state-owned Issaquah Salmon Hatchery on Issaquah Creek, built in 1936, raises Chinook and Coho salmon.
Quarry redevelopment. A 120-acre gravel quarry north of downtown is planned for residential and commercial redevelopment over 30 years.

Hydroseed Lawn Installation in Seattle, WA

Our Services in Issaquah, WA

Issaquah Questions

Will hydroseed wash off my slope in an Issaquah November?

Plain seed can. That is why we use bonded fiber matrix or heavy tackified mulch on slopes here, and blankets where water channels.

Is August a bad time to seed in Issaquah?

August is the driest month, so seed needs daily watering. Many clients wait for the September and October rains.

My yard drains toward Issaquah Creek. What do you add?

A silt fence line below the work, protection on any drain close by, and mulch sprayed over the seed right away.

Can you seed stockpiles and graded pads between construction phases?

Yes. Temporary hydroseeding keeps soil in place until the next phase or the final landscape.

Free Estimates in Issaquah, WA

Free estimates for Issaquah slopes and lawns.

Call (206) 208-7934 Free Estimate