Moss in Lawn: Fix the Drainage, Not the Symptom

Homeowner has moss (algae) in low spots where grass won't grow. Tried Zoysia—slow, still sparse.

Moss = symptom, not cause. It grows where: soil stays wet, compacted, low pH, or shade. Grass dies for the *same reasons*.

Fix the site:

1. Raise low spots: Add topsoil/compost blend to level. Incorporate with fork.
2. Check for hardpan: Post-hole dig. Impermeable layer? Break it or install drainage.
3. Improve light: Prune overhead branches if shade is factor.
4. Soil test: pH, nutrients. Moss loves acidic—lime if test confirms.

Then reseed: Fine fescue (shade/dry tolerant) or shade-tolerant bluegrass blend. But *only after* drainage/leveling.

Killing moss without fixing the "why" = moss returns. Fix the soil physics first.