— Plant your Achillea (or Yarrow) outdoors in spring or autumn.
— Choose a place in full sun, in well-drained soil.
— Space plants 45cm apart.
— Water-in after planting; never allow plants to become waterlogged.
— Stake using brushwood or bamboo canes, before the flowers appear.
— Cut back after the first flowering to encourage a second flush in late summer.
— Lift and divide clumps every three to five years, in late autumn or early spring.
— Read further general instructions about planting bare-root perennials