We have found 56 plants that meet your criteria.

Achillea filipendulina 'Cloth of Gold' Yarrow Flat, plate-like yellow flowers on tall stems £5.86 Buy
Achillea 'Moonshine' Yarrow Lovely, large sulphur-yellow flowers £5.86 Buy
Anthemis tinctoria 'E.C. Buxton' Golden Marguerite Cheerful, lemon-yellow daisy-like flowers £5.37 Buy
Aquilegia canadensis Rock Bells Delicate, nodding flowers. Ideal in a meadow £5.37 Buy
Price Pruned
Aquilegia chrysantha 'Yellow Queen' Granny's Bonnet Elegant lemon yellow flowers NOW £5.37 Buy
Artemisia ludoviciana 'Valerie Finnis' Valerie Finnis Artemisia Very drought tolerant £5.37 Buy
Artemisia 'Powis Castle' Wormwood Silvery, aromatic foliage £5.37 Buy
Price Pruned
Brugmansia suaveolens Angels Trumpet (syn. Datura) Stunning, night-scented blooms NOW £8.31 Buy
Digitalis ferruginea Rusty Foxglove Unusual variety of a garden favourite £5.86 Buy
Echinacea 'Sunrise' Coneflower Huge, yellow flowers £6.84 Buy
Eremurus stenophyllus Foxtail Lily Soaring, slender spikes of dark yellow flowers £6.84 Buy
Price Pruned
Euphorbia characias subsp. 'characias Humpty Dumpty' Wood Spurge Delightful apple-green spring flowers NOW £5.37 Buy
Euphorbia characias 'Silver Swan' Spurge Delightful variegated foliage £6.84 Buy
Price Pruned
Euphorbia nicaeensis Spurge Long lasting flowers and structural shape NOW £5.37 Buy
Euphorbia palustris Spurge Bright green flowers. Ideal for a woodland edge or sunny border £5.86 Buy
New
Euphorbia seguieriana Spurge Great for adding texture and structure £5.37 Buy
Foeniculum vulgare 'Giant Bronze' Bronze Fennel Tall perennial with feathery, bronze leaves £4.99 Buy
Geum 'Lady Stratheden' Avens Bright yellow, double flowers £5.86 Buy
Price Pruned
Hedychium densiflorum Ginger Lily The tallest of the ginger lilies NOW £6.84 Buy
Helenium 'Wyndley' Sneezeweed Lovely with ornamental grasses £5.86 Buy