We have found 13 plants that meet your criteria.

Price Pruned
Rosa Rhapsody in Blue '('Frantasia') (PBR)' rose (shrub) The closest to a blue rose NOW £10.99 Buy
Price Pruned
Rosa 'William Lobb' Shrub Rose Scented, deep crimson flowers NOW £10.99 Buy
Price Pruned
Buddleja davidii 'Black Knight' Butterfly Bush Sumptuous deep purple flowers NOW £5.99 Buy
Fuchsia 'Riccartonii' Fuchsia Delicate, scarlet and dark purple flowers £5.99 Buy
Hebe 'Red Edge' Shrubby Veronica Small hebe with lilac flowers £7.99 Buy
Price Pruned
Paeonia 'Deep Purple' Tree Peony / Tree Paeony... Tree peony with huge, purple flowers NOW £9.99 Buy
Pittosporum tenuifolium 'Tom Thumb' Kohuhu Small, rounded shrub with purple leaves. £8.99 Buy
Price Pruned
Rosa Falstaff = 'Ausverse (PBR)' Shrub Rose Powerful old rose fragrance NOW £12.99 Buy
Price Pruned
Rosa 'Cardinal de Richelieu' rose Cardinal de Richelieu (gallica)... Velvety purple blooms NOW £10.99 Buy
Price Pruned
Rosa 'Roseraie de l'Haÿ' rose (shrub) Fabulously rich purple-red blooms NOW £9.99 Buy
Vinca minor 'Atropurpurea' Lesser Periwinkle Delicious dark damson-purple flowers £5.99 Buy
Price Pruned
Wisteria sinensis Standard Chinese Wisteria Sweetly scented bluish-lilac flowers NOW £89.99 Buy
Price Pruned
Rosa 'Ferdinand Pichard' rose (hybrid perpetual) An excellent striped rose NOW £10.99 Buy