Achillea millefolium subsp. millefolium

Common yarrow is an incredibly tough and adaptable perennial that tolerates poor soils, drought, and neglect once established. Plant it in full sun to part shade and water sparingly, as overwatering is one of the few things that can harm it. Deadhead spent blooms to encourage a second flush of flowers and divide clumps every 2-3 years to maintain vigor.