We have found 31 plants that meet your criteria.

Price Pruned
Achillea millefolium 'Lilac Beauty' Yarrow An unusual lilac, yarrow NOW £5.49 Buy
Geranium macrorrhizum 'Bevan's Variety' Balkan Cranesbill Magenta flowers. Perfect for suppressing weeds £5.99 Buy
Price Pruned
Geranium phaeum var. 'phaeum Samobor' Dusky Cranesbill Small, purple-black flowers. Good for damp... NOW £5.49 Buy
Geranium pratense 'Midnight Reiter' Cranesbill Unusual deep purple foliage £5.99 Buy
Geranium psilostemon Armenian Cranesbill Gorgeous magenta flowers with black centres £5.99 Buy
Geranium sylvaticum 'Birch Lilac' Geranium Great for a woodland setting £5.99 Buy
Iris 'Dusky Challenger' Bearded Iris Huge ruffled silky rich purple-blue blooms £6.99 Buy
Iris 'Langport Flame' Intermediate Bearded Iris Sumptuous purple and orange fragrant flowers £6.99 Buy
Iris 'Rare Edition' Intermediate Bearded Iris Eyecatching variety with purple and white petals £6.99 Buy
Iris 'Sultan's Palace' Bearded Iris Sultry, maroon flowers £6.99 Buy
Price Pruned
Iris 'Superstition' Bearded Iris Purple-black flowers NOW £5.99 Buy
Price Pruned
Lavandula angustifolia 'Munstead' Lavender A compact variety with blue-purple flowers NOW £4.99 Buy
Price Pruned
Lavandula x intermedia 'Grosso' Lavender A vigorous variety with violet flowers NOW £4.99 Buy
Price Pruned
Lavandula 'Willow Vale' Lavender Makes a stunning, informal flowering hedge NOW £4.99 Buy
Price Pruned
Lavandula 'x chaytoriae Silver Sands' Lavender Stunning, silver foliage and dark purple flowers NOW £4.99 Buy
Phlomis tuberosa 'Amazone' Jerusalem Sage Whorls of lilac flowers and architectural seedheads £6.99 Buy
Stachys byzantina 'Big Ears' Lamb's Ears Purple flowers large Grey-green leaves £5.49 Buy
Geranium phaeum Dusky Cranesbill Small, deep maroon flowers. Good for groundcover £5.99 Buy
Price Pruned
Geranium phaeum 'Lily Lovell' Dusky Cranesbill Iridescent saucers of purple flowers. Good for shade NOW £5.49 Buy
Geranium x magnificum Geranium Larger sized violet-blue flowers £6.99 Buy