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Crabgrass Prevention and Moss Control in Rhode Island

Moved from tropics to RI. Lawn messy, crabgrass dominant. Ripped part, reseeded late Sept. Bought corn gluten meal (Concern Weed Prevention Plus). Questions: perfect time for pre-emergent? Crabgrass germination signs? Dry period needed after CGM but rain forecast. Can apply CGM on wet soil? All-year program? Backyard borders wetland, humid soil, moss. The expert says corn gluten ineffective in all tests; no good time. Use Halts or Dimension for crabgrass. Ortho Weed-B-Gone for weeds (not grown crabgrass). All-year program needs book. Moss: rip out, 100 lbs lime/1000 sq ft, mix top 1", seed shade grass.

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