Sultan sits on the Sultan River, on the way up the highway toward the trails and the passes. Yards step with the terrain. Water comes off the higher ground, crosses a lawn, and heads for the river or the ditch. Cool, wet weather keeps moss growing for most of the year. The flat part of a mountain lot can be more moss than grass by March.
Snohomish County · ZIP 98294 · 2020 population 5,458
A short lawn season and a thick mat
We dethatch the bench, not the bank. On a slope the debris slides and the blades cut rills. The moss comes off in heavy mats because it has had all winter. Under it the soil may be thin. We do not keep raking until there is nothing left.
Seed has a short window before the fall rains or the late spring cold. If we miss it, we wait. A bare patch through winter on a rainy slope is an erosion problem. We cover it or we time the work so grass has a chance.
The ground in Sultan
The useful projects are the ones that make a sloped lot walkable: a gravel path that stays put, a rock wall where the bank is cutting, a drain at the top of the slope so the patio is not the creek. Forest edge is close. Alders and maples lean in, and after a wind the cleanup is limbs, not a few leaves on a patio.
Lawns exist on the benches. They need seed that can take shade at the tree line and a soil that is often thin. We do not promise a golf-course surface against the timber. Native mountain plants hold the cuts better than a bark bed that just slides downhill in January. Access for machines is usually fine along the highway side and tight once you are in the trees. We look at that before we promise a wall.
How we do the work
Thatch here is usually moss plus a layer of dead stems, not the classic Midwest straw mat. A power rake set too deep tears out the live grass and leaves a scar. We set the blades to lift the mat and stop when we are in soil.
The debris has to leave the property. A thatch layer raked into the bed or left in windrows just moves the problem. We haul it. If the lawn underneath is mostly dirt and shade, dethatching is the start of a different plan, not a greener lawn by itself.
What we look at first
- How thick the moss mat is
- Whether live grass is under it or the mat is the whole lawn
- Irrigation and mowing height that are growing the thatch back
- A place to stage the trailer so we are not blocking a tight drive
How deep we go
Shallow enough to save the crowns of the grass. If the lawn is thin, a second light pass beats one aggressive pass that pulls the plants out by the roots. You should see soil in places and live grass still standing.
Hauling is part of the job
A dethatched lawn produces a surprising pile, wet and heavy. We load and remove it. Spreading it in the beds plants the moss and the weed seed you just paid to lift.
Mowing height afterward
Cutting to the dirt is how the mat comes back. We leave the grass taller than a golf collar, especially in shade. Tall enough to shade its own soil, short enough to walk.
More from this crew
- Lawn dethatching across Snohomish County
- Lawn aeration in Sultan
- Lawn seeding in Sultan
- Lawn mowing in Sultan
- Lawn fertilization in Sultan
- Lawn dethatching in Monroe
- Lawn dethatching in Gold Bar
- Lawn dethatching in Index
Sources for the climate and the water
- USDA plant hardiness map for choosing plants that can take a Snohomish County winter.
- EPA WaterSense on watering less once a lawn or a new planting is established.
- EPA Soak Up the Rain on keeping roof and yard water from becoming someone else’s problem.
