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Controlling Coffeeweed, Bermuda, and Johnson Grass: Hand Pulling Best

Q: When to apply pre-emergent to control coffeeweed, bermuda, and Johnson grass?

A: Pre-emergent chemicals are ineffective on coffeeweed seed. Bermudagrass and Johnsongrass are perennials; pre-emergent won't hurt them. Hand pulling might be your best option. Or apply glyphosate (KillZall, Roundup) on a foam paintbrush to weeds as they appear.

About Gardening: Crabgrass in New Wisconsin Seeding: Mow High, Bag, Wait for Winter Kill; Organic Lawn Weed Control: Beyond Products to Cultural Practices; Pre-Emergent Before Sod Installation: Timing and Alternatives for Southern California; Weed Control in the Landscape: Methods from Hand-Pulling to Boiling Water; Landscaping 101: A Garden Arsenal to Fight Weeds Without Chemicals; Pre-emergent Herbicide Overapplication: Not the Solution; Weed Control in Fern Beds: Glyphosate Wipe or Hand-Pull; Pre-Emergent Herbicides: Same Principle for Winter and Summer Weeds; Why Pre-Emergent Failed Against Henbit—and When to Apply Next Time; Seeding Fescue vs. Using Pre-Emergent Herbicides: Resolving the Conflict

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