This annual weed thrives in shady areas with moist, fertile soil, but it’s adaptable and can also sprout in dry areas. Chickweed forms a low-growing crown of stems that spread and sprawl. In a planting bed, the stems crawl through perennials and annuals, showing up as far as 12 to 18 inches from the plant’s crown. In lawns, it usually shows up in thin grass with heavy, moist soil. For a small infestations, hand-pulling works fine. Try to get plants up before they set seed, which can number up to 800 per plant. For heavy infestations, look for herbicides that list chickweed. There is also a perennial chickweed that spreads by seed and stem or root pieces.