We have found 15 plants that meet your criteria.

Achillea taygetea Yarrow A shorter variety with pale flowers £5.49 Buy
Artemisia ludoviciana 'Valerie Finnis' Valerie Finnis Artemisia Very drought tolerant £5.49 Buy
Artemisia 'Powis Castle' Wormwood Silvery, aromatic foliage £5.49 Buy
Price Pruned
Euphorbia characias subsp. 'characias Humpty Dumpty' Wood Spurge Delightful apple-green spring flowers NOW £5.49 Buy
Euphorbia characias 'Silver Swan' Spurge Delightful variegated foliage £6.99 Buy
Price Pruned
Euphorbia cornigera Spurge Stunning large yellow flowers NOW £5.99 Buy
Price Pruned
Euphorbia nicaeensis Spurge Long lasting flowers and structural shape NOW £5.49 Buy
New
Euphorbia seguieriana Spurge Great for adding texture and structure £5.49 Buy
Price Pruned
Euphorbia x martinii Spurge Perfect for a small sunny border NOW £6.49 Buy
Verbascum '(Cotswold Group) Gainsborough' Mullein Saucer-shaped, soft yellow flowers £5.99 Buy
Artemisia ludoviciana 'Silver Queen' Western Mugwort Ideal for a Mediterranean garden £5.49 Buy
Euphorbia characias subsp. 'wulfenii' Spurge Handsome tall evergreen with chartreuse flowers in spring £5.99 Buy
Iris 'pseudacorus' Yellow Flag Glistening golden flowers for the pondside £4.99 Buy
Price Pruned
Sisyrinchium striatum Sisyrinchium Cup shaped pale yellow flowers NOW £4.99 Buy
Verbascum '(Cotswold Group) Cotswold Queen' Mullein Saucer-shaped soft-yellow flowers £5.99 Buy