Song Siren Little Susie Yarrow

Song Siren™ Little Susie is a compact yarrow with pink-purple flowerheads held above grey-green, fern-like foliage. Its branching flowering stems rise from a low carpet of leaves, giving summer borders color and a contrasting fine texture. ## Seasonal interest The [RHS cultivar profile](https://www.rhs.org.uk/plants/375016/achillea-millefolium-little-susie-song-siren-series/details) records flowering from June through September. Deadheading can help prolong the display. The deciduous foliage forms a clump, and the flowers suit cutting for arrangements. ## Garden use Use Little Susie in cottage gardens, prairie plantings, wildlife gardens and flower borders. [Red Butte Garden](https://redbuttegarden.org/plants/species/1368/) grows it in its Water Conservation Garden and records a height of 22 inches and width of 15 inches. Other exact-cultivar sources give widths up to 24 inches, so allow room for the clump to develop. Red Butte lists USDA zones 3–9 and identifies it as resistant to deer. ## Growing conditions Plant in full sun and well-drained soil. Red Butte also records partial shade and low water needs. RHS accepts chalk, clay, loam and sand when drainage is suitable. Established yarrow tolerates dry periods, but newly planted plants need water during dry spells in their first year. ## Maintenance Deadhead regularly to encourage further flowers. The [RHS growing guide](https://www.rhs.org.uk/plants/achillea/how-to-grow-achillea) recommends leaving old flower stems for winter structure and wildlife, then tidying them in spring. Divide mature clumps every three to five years to maintain vigor and flowering.