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Moss on Brick Patio: Herbicide or Acceptance

Moss on brick patio on concrete slab—power washing increases porosity. Chemicals are only practical option.

Glyphosate (Roundup)

Spot-spray moss on dry day.
Kills all vegetation contacted.
Wait 1–3 months before planting nearby (label).
Keep off desirable plants.

Alternatives

Zinc sulfate or ferrous sulfate moss killers (less non-target risk).
Pressure wash less frequently; accept some moss.

Solarization (plastic sheeting) impractical on patio.

Pests: Moss-Like Growth on Trees: Epiphyte, Not Parasite; Managing Moss in a Shady, Cool-Climate Lawn; Mossy Soil in LA Flower Beds: Benign, Even Attractive; Controlling Moss in a Brick Paver Patio; Managing Blackened Sphagnum Moss in Bogs: Top-Watering and Species Considerations; Dealing with Moss Before Converting a Field to a Garden; Controlling Moss in Shady Lawns: The Limestone Solution; Moss Control: Dry It Out, Then Decide; Managing Moss in Pavers and Organic Fertilizer Alternatives; Sphagnum Moss: Biology, Benefits & Bog Gardening Guide

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