We have found 88 plants that meet your criteria.

Spurge ‘Euphorbia characias subsp. wulfenii’ Handsome tall evergreen with chartreuse flowers in spring £5.95 Buy
Price Pruned
Cypress Spurge ‘Euphorbia cyparissias Fens Ruby’ Dusky purple leaves and bright yellow flowers in summer NOW £5.45 Buy
Price Pruned
Spurge ‘Euphorbia palustris’ Bright green flowers. Ideal for a woodland edge or sunny border NOW £5.45 Buy
Price Pruned
Spurge ‘Euphorbia polychroma’ Vivid acid yellow flowers NOW £5.45 Buy
Avens ‘Geum Lady Stratheden’ Bright yellow, double flowers £5.95 Buy
Price Pruned
Ginger Lily ‘Hedychium densiflorum’ The tallest of the ginger lilies NOW £6.95 Buy
Price Pruned
Ginger Lily ‘Hedychium gardnerianum’ Architectural foliage and fragrant yellow flowers NOW £6.95 Buy
Daylily ‘Hemerocallis Stella De Oro’ a dwarf daylily with cheeful yellow flowers £5.95 Buy
Intermediate Bearded Iris ‘Iris Fritillary Flight’ Dove-grey and ochre flowers £6.95 Buy
Iris ‘Iris Tangerine Sky’ Late flowering, tangerine and golden tones £6.95 Buy
Intermediate Bearded Iris ‘Iris Vinho Verde’ Lemon and lime flowers £6.95 Buy
Kirengeshoma ‘Kirengeshoma palmata’ Suitable for a shady border £5.45 Buy
Red Hot Poker ‘Kniphofia Brimstone’ Dramatic spikes of yellow flowers £6.95 Buy
Shasta Daisy ‘Leucanthemum × superbum T.E. Killin’ A popular, bright, white daisy. Very long flowering £5.95 Buy
Golden Groundsel ‘Ligularia dentata Britt Marie Crawford’ Handsome foliage and cheerful, yellow flowers. Great beside water £6.95 Buy
Golden Groundsel ‘Ligularia The Rocket’ Towering spikes of brilliant yellow flowers £5.45 Buy
West Country Lupin ‘Lupinus Chameleon’ Fabulous perennial lupin £6.95 Buy
Price Pruned
West Country Lupin ‘Lupinus Manhattan Lights’ Bi-coloured blooms NOW £6.95 Buy
West Country Lupin ‘Lupinus Tequila Flame’ Makes a great focal point £6.95 Buy
Paeony / Peony ‘Paeonia Claire de Lune’ Rare variety with single, lemon yellow flowers £32.95 Buy