We have found 11 plants that meet your criteria.

Agastache 'Black Adder' Hyssop Distinctive violet, bottlebrush flowers £5.86 Buy
Price Pruned
Agastache 'Blue Fortune' Mexican Giant Hyssop Spires of lilac flowers and aromatic leaves NOW £5.37 Buy
Allium schubertii ornamental onion The flowers look like giant fireworks £7.34 Buy
Allium unifolium American onion A longer flowering period that most Alliums £3.67 Buy
Crocus Special Offers
Allium 'Schubertii' Allium Schubertii Giant pink starbursts NOW £4.88 Buy
Nepeta x faassenii Catmint Loose drifts of lavender flowers. Great for edging £5.86 Buy
Nepeta x faassenii 'Kit Cat' Catmint A dwarf variety with purple flowers £5.86 Buy
Perovskia abrotanoides Russian Sage Silvery white aromatic foliage with long lasting blue flowers £7.82 Buy
Allium schoenoprasum chives Edible leaves and purple, button flowers £4.99 Buy
Price Pruned
Geranium macrorrhizum Balkan Crane's Bill Bright pink flowers. Perfect for dry shade NOW £5.37 Buy
Crocus Special Offers
Helleborus foetidus Stinking Hellebore Lovely evergreen foliage plant with spring flowers NOW £5.37 Buy