We have found 14 plants that meet your criteria.

Valerie Finnis Artemisia ‘Artemisia ludoviciana Valerie Finnis’ Very drought tolerant £5.49 Buy
Price Pruned
Wormwood ‘Artemisia Powis Castle’ Silvery, aromatic foliage NOW £4.99 Buy
Spurge ‘Euphorbia characias subsp. wulfenii’ Handsome tall evergreen with chartreuse flowers in spring £5.99 Buy
Spurge ‘Euphorbia Whistleberry Garnet’ Bold evergreen foliage £6.49 Buy
Intermediate Bearded Iris ‘Iris Fritillary Flight’ Dove-grey and ochre flowers £6.99 Buy
Iris ‘Iris Tangerine Sky’ Late flowering, tangerine and golden tones £6.99 Buy
Intermediate Bearded Iris ‘Iris Vinho Verde’ Lemon and lime flowers £6.99 Buy
Price Pruned
Red Hot Poker ‘Kniphofia Little Maid’ Small variety with pale yellow flowers NOW £5.49 Buy
Jerusalem Sage ‘Phlomis fruticosa’ Evergreen shrub with whorls of yellow flowers £5.99 Buy
Phlomis ‘Phlomis russeliana’ Pretty whorls of pale yellow flowers £6.99 Buy
Senecio ‘Brachyglottis (Dunedin Group) Sunshine’ Yellow flowers and silver leaves £6.99 Buy
Iris ‘Iris Good Show’ Unusual orange flowers £6.99 Buy
Red Hot Poker ‘Kniphofia Brimstone’ Dramatic spikes of yellow flowers £6.99 Buy
Red Hot Poker ‘Kniphofia Royal Standard’ Bright yellow, torch-like flowers £5.99 Buy