We have found 31 plants that meet your criteria.

Achillea filipendulina 'Cloth of Gold' Yarrow Flat, plate-like yellow flowers on tall stems £5.99 Buy
Achillea 'Moonshine' Yarrow Lovely, large sulphur-yellow flowers £5.99 Buy
Aquilegia canadensis Rock Bells Delicate, nodding flowers. Ideal in a meadow £5.49 Buy
Price Pruned
Aquilegia chrysantha 'Yellow Queen' Granny's Bonnet Elegant lemon yellow flowers NOW £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
Euphorbia amygdaloides var. 'robbiae' Wood Spurge Great for a woodland setting £5.49 Buy
Euphorbia amygdaloides 'Purpurea' Wood Spurge Lovely deep purple foliage and acid-yellow flowers £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 nicaeensis Spurge Long lasting flowers and structural shape NOW £5.49 Buy
Euphorbia palustris Spurge Bright green flowers. Ideal for a woodland edge or sunny border £5.99 Buy
New
Euphorbia seguieriana Spurge Great for adding texture and structure £5.49 Buy
Fritillaria michailovskyi Michaelovski fritillary A good option for an alpine bed £5.50 Buy
Fritillaria uva-vulpis fox's grape fritillary Perfect for an apine bed or rockery £5.00 Buy
Phlomis fruticosa Jerusalem Sage Evergreen shrub with whorls of yellow flowers £5.99 Buy
Phlomis russeliana Phlomis Pretty whorls of pale yellow flowers £6.99 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
Price Pruned
Euphorbia cyparissias 'Fens Ruby' Cypress Spurge Dusky purple leaves and bright yellow flowers in summer NOW £5.49 Buy