Moonshine Yarrow

‘Moonshine’ is an upright Achillea hybrid with lemon-yellow flower heads above finely divided, silvery gray-green foliage. [Cambridge University Botanic Garden](https://www.botanic.cam.ac.uk/the-garden/plant-list/achillea-moonshine/) attributes the selection to Alan Bloom in 1954 and describes it as a hybrid involving A. clypeolata and A. ‘Taygetea’; the [RHS profile](https://www.rhs.org.uk/plants/92712/achillea-moonshine/details) records flowers from May through September. ## Garden use The flat flower clusters rise above the foliage and pair well with ornamental grasses and other summer perennials. Use it in a sunny border, gravel planting, prairie-style bed, or cutting garden; the flowers attract bees and butterflies. Cambridge lists a typical mature height and spread of about 60 cm. Other sources give shorter or broader ranges, so allow room for a clump roughly 18–24 inches tall and wide, with size varying by site and climate. ## Growing conditions Give ‘Moonshine’ full sun and free-draining soil. It tolerates dry conditions once established, but water new plants during their first dry season. Avoid persistently wet winter soil. [Darwin Perennials](https://www.darwinperennials.com/Products/Details/?phid=000400001003554) lists late-spring, summer, and autumn flowering, and notes that in some regions the plant also offers winter interest. ## Maintenance Following the [RHS Achillea care guide](https://www.rhs.org.uk/plants/achillea/how-to-grow-achillea), remove faded flower heads to encourage a longer display. Leave sound stems and seed heads standing through winter for structure and wildlife, then cut them back in early spring. Divide older clumps every three to five years if they lose vigor or flower less freely; spring division is the usual method for maintaining named Achillea selections.