We have found 20 plants that meet your criteria.

Achillea filipendulina 'Cloth of Gold' Yarrow Flat, plate-like yellow flowers on tall stems £5.86 Buy
Price Pruned
Achillea millefolium 'Cerise Queen' Yarrow Flat, magenta flowers on tall stems NOW £5.37 Buy
New
Achillea millefolium 'Lansdorferglut' Yarrow Subtle shades for prairie style planting £6.35 Buy
Price Pruned
Achillea millefolium 'Lilac Beauty' Yarrow An unusual lilac, yarrow NOW £5.37 Buy
Achillea millefolium 'Red Beauty' Yarrow Striking dark red flowers throughout the summer £5.86 Buy
Achillea millefolium 'Red Velvet' Yarrow Deep red, flat heads of flowers and feathery foliage £5.37 Buy
Achillea 'Moonshine' Yarrow Lovely, large sulphur-yellow flowers £5.86 Buy
Achillea 'Paprika (Galaxy Series)' Yarrow Bright, orange-red flowers £5.86 Buy
Price Pruned
Achillea 'Terracotta' Yarrow Long-lasting, rich terracotta flowers NOW £5.37 Buy
Price Pruned
Achillea 'Walther Funcke' Yarrow Bright, terracotta flowers with flat heads NOW £5.37 Buy
Artemisia ludoviciana 'Valerie Finnis' Valerie Finnis Artemisia Very drought tolerant £5.37 Buy
Artemisia 'Powis Castle' Wormwood Silvery, aromatic foliage £5.37 Buy
Geranium macrorrhizum 'Bevan's Variety' Balkan Cranesbill Magenta flowers. Perfect for suppressing weeds £5.86 Buy
Perovskia abrotanoides Russian Sage Silvery white aromatic foliage with long lasting blue flowers £7.82 Buy
Achillea ptarmica '(The Pearl Group) The Pearl'' Sneezewort Masses of snow-white, button flowers £5.86 Buy
Achillea 'Summerwine' Yarrow Long-lasting, wine-red flowers £5.86 Buy
Artemisia ludoviciana 'Silver Queen' Western Mugwort Ideal for a Mediterranean garden £5.37 Buy
Price Pruned
Geranium macrorrhizum Balkan Crane's Bill Bright pink flowers. Perfect for dry shade NOW £5.37 Buy
Price Pruned
Perovskia atriplicifolia 'Little Spire' Russian Sage A shorter form of the popular Russian sage NOW £7.82 Buy
Perovskia 'Blue Spire' Russian Sage Violet-blue flowers and silvery foliage. Great planted en masse £7.82 Buy