Sulfur cinquefoil Potentilla recta
IDENTIFICATION — This 2-ft.-tall perennial weed blooms with sulfur-yellow flowers from late spring to late summer. The plant has stout, hairy stems and leaves with five to seven deep lobes. It spreads by seeds and also by root pieces that are left in the soil.
FAVORITE CONDITIONS — Sulfur cinquefoil needs a place in full sun and is usually found in dry, alkaline soil in rarely cultivated areas.
CONTROL — Hand pull or hoe, making sure to remove all parts of the root. Broadleaf herbicides containing 2,4-D are also effective.