We have found 126 plants that meet your criteria.

Achillea filipendulina 'Cloth of Gold' yarrow Flat, plate-like yellow flowers on tall stems £6.49 Buy
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 '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
Agastache 'Black Adder' hyssop Distinctive violet, bottlebrush flowers £6.99 Buy
Allium giganteum ornamental onion Large, showy lilac-pink globes £7.99 Buy
Allium hollandicum 'Purple Sensation' allium Rich, deep purple globes £6.99 Buy
Allium schoenoprasum chives Edible leaves and button-like flowers £4.99 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
Price Pruned
Allium unifolium American onion A longer flowering period that most Alliums NOW £5.99 Buy
Allium 'Globemaster' ornamental onion Enormous, deep violet globes £7.99 Buy
Allium 'Schubertii' ornamental onion Giant pink starbursts £6.99 Buy
Angelica archangelica angelica Stunning accent plant £6.99 Buy
Angelica gigas angelica Tall, dramatic burgundy flowers £6.99 Buy