We have found 493 plants that meet your criteria.

Achillea millefolium 'Cerise Queen' yarrow Flat, magenta flowers on tall stems £6.49 Buy
Achillea millefolium 'Lansdorferglut' yarrow Subtle shades of salmon-pink through rose-flushed ivory. £6.99 Buy
Achillea ptarmica (The Pearl Group) 'The Pearl' sneezewort Masses of snow-white, button flowers £6.49 Buy
Achillea 'Alabaster' yarrow A late flowering, white form £7.99 Buy
Achillea 'Mondpagode' yarrow A tall, late flowering variety £6.99 Buy
Achillea 'Paprika' (Galaxy Series) yarrow Bright, orange-red flowers £6.49 Buy
Achillea 'Taygetea' yarrow A shorter variety with pale flowers £6.49 Buy
Achillea 'Terracotta' yarrow Long-lasting, rich terracotta flowers £6.49 Buy
Price Pruned
Achillea 'Wesersandstein' yarrow Fading flowers provide an array of colour NOW £6.49 Buy
Agapanthus africanus African lily Globes of blue flowers in late summer £7.49 Buy
Agapanthus 'Black Pantha' (PBR) African lily Deep blue, almost black flowers £8.99 Buy
Price Pruned
Alchemilla erythropoda lady's mantle Gorgeous groundcover for sun or shade NOW £5.99 Buy
Alchemilla mollis lady's mantle Scalloped leaves and frothy flowers £5.99 Buy
Allium hollandicum 'Purple Sensation' allium Rich, deep purple globes £6.99 Buy
Allium sphaerocephalon round-headed leek Small, wine-coloured flowers on tall stems £6.99 Buy
Allium stipitatum 'Mount Everest' allium Tightly packed dense globes £6.99 Buy
Allium 'Globemaster' ornamental onion Enormous, deep violet globes £7.99 Buy
Price Pruned
Amsonia tabernaemontana amsonia Dense clusters of ice-blue, star-like flowers NOW £5.99 Buy
Amsonia tabernaemontana var. salicifolia amsonia Piercing blue flowers in late spring and summer £6.49 Buy
Anchusa azurea 'Loddon Royalist' alkanet Intense blue flowers in early summer £6.49 Buy