We have found 35 plants that meet your criteria.

Yarrow ‘Achillea filipendulina Cloth of Gold’ Flat, plate-like yellow flowers on tall stems £5.99 Buy
Yarrow ‘Achillea Moonshine’ Lovely, large sulphur-yellow flowers £5.99 Buy
Rock Bells ‘Aquilegia canadensis’ Delicate, nodding flowers. Ideal in a meadow £4.99 Buy
Price Pruned
Granny's Bonnet ‘Aquilegia Yellow Queen’ Elegant lemon yellow flowers NOW £5.49 Buy
Valerie Finnis Artemisia ‘Artemisia ludoviciana Valerie Finnis’ Very drought tolerant £5.49 Buy
Price Pruned
Angels Trumpet ‘Brugmansia suaveolens (syn. Datura)’ Stunning, night-scented blooms NOW £8.49 Buy
Coneflower ‘Echinacea Sunrise’ Huge, yellow flowers £6.99 Buy
Foxtail Lily ‘Eremurus stenophyllus’ Soaring, slender spikes of dark yellow flowers £6.99 Buy
Spurge ‘Euphorbia characias Silver Swan’ Delightful variegated foliage £6.99 Buy
Price Pruned
Spurge ‘Euphorbia nicaeensis’ Long lasting flowers and structural shape NOW £5.49 Buy
New
Spurge ‘Euphorbia seguieriana’ Great for adding texture and structure £5.49 Buy
Bronze Fennel ‘Foeniculum vulgare Giant Bronze’ Tall perennial with feathery, bronze leaves £4.99 Buy
Sneezeweed ‘Helenium Wyndley’ Lovely with ornamental grasses £5.99 Buy
Shasta Daisy ‘Leucanthemum × superbum T.E. Killin’ A popular, bright, white daisy. Very long flowering £5.99 Buy
Price Pruned
West Country Lupin ‘Lupinus Manhattan Lights’ Bi-coloured blooms NOW £6.99 Buy
Phlomis ‘Phlomis russeliana’ Pretty whorls of pale yellow flowers £6.99 Buy
Hollyhock (Syn Alcea x Althaea... ‘x Alcalthaea suffrutescens Parkallee’ Pale yellow, double flowers £5.99 Buy
Golden Marguerite ‘Anthemis tinctoria E.C. Buxton’ Cheerful, lemon-yellow daisy-like flowers £5.49 Buy
Price Pruned
Columbine ‘Aquilegia McKana Hybrids’ Bonnet-like flowers in a range of colours NOW £4.99 Buy
Wormwood ‘Artemisia Powis Castle’ Silvery, aromatic foliage £5.49 Buy