Shared diagnosis · May 18, 2026
Mixed lawn decline — thin/dead patches with weeds and possible fungal stress
Poa annua / Rhizoctonia solani / general thinning complex
What's visible: The lawn shows a widespread irregular patchwork of green clumps surrounded by straw-colored to bare dead zones covering a large portion of the surface — this is NOT a mowing stripe pattern because the color difference is true yellow/brown vs green, not a light-reflection effect. The bare/dead zones are scattered randomly across the whole lawn (not following a path or drainage line), and there are small-leafed broadleaf weeds (looks like clover or speedwell) filling in the gaps. The turf that is green appears to be surviving in clumps, consistent with a bunch-type grass like perennial ryegrass that doesn't spread to fill in dead areas on its own.
Why it's there: This lawn is showing classic signs of a struggling perennial ryegrass stand in the Pacific Northwest spring — likely a combination of winter thinning (ryegrass can be damaged by cold, wet, compacted soils over winter), possible red thread or another cool-season fungal disease that killed patches over winter/early spring, and opportunistic weed invasion filling those bare spots. Ryegrass is a bunch-type grass, meaning it cannot spread sideways to recover — once a patch dies, it stays bare until reseeded. The good news: May in Gig Harbor is the ideal window to overseed and restore this lawn before summer heat arrives.
Recommended fix
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