Campanula takesimana 'Elizabeth' (Korean Bellflower): Upright stems with dark pink drooping large bells. Can be vigorous on good soil. May need some support. Bee-friendly. Hardy. Up to 70cm.

Centaurea montana (Perennial cornflower): Large blue flowers in early summer, repeated later in year if cut back. Very attractive to bees. To 50cm. Hardy

Centranthus ruber 'Albus' (White Valerian): White panicles of white flowers in mid-late summer. Very easy, self-seeds. Perennial and hardy. To 60cm.

Centranthus ruber var. coccineus (Valerian dark red): Panicles of dark-red flowers in mid-summer, loved especially by butterflies. Classic cottage garden plant. Hardy. Up to 50cm.

Euphorbia amygdaloides var. robbiae (Mrs Robb's bonnet): Great plant for difficult dry, shady areas. Evergreen dark-green leaves and vibrant lime-green flowers in spring. Suckers and can spread.

Geranium himalayense 'Derrick Cook' (Cranesbill 'Derrick Cook'): Large white flowers with delicate purple veining above a clump of bright green leaves. Foliage turns red in autumn. To 35cm. Hardy. [Collect Only]

Geranium phaeum (Dusky cranesbill): Purple flowers with swept-back petals held high above soft green foliage. Early to flower, reliable and easy. To 60cm. Hardy.

Geranium phaeum 'Album' (Dusky cranesbill 'Album'): Clean white flowers held above bright green foliage. Excellent in shade. Spreading habit. Hardy. Height to 60cm.

Geranium phaeum 'Raven' (Dusky cranesbill 'Raven'): Dark purple flowers with long stamens and swept-back petals held high above soft green foliage. Great for shady areas. To 60cm. Hardy. [Collect Only]

Monarda 'Pink Supreme' (PBR) (Bee Balm/Bergamot 'Pink Supreme'): Whorls of bright pink flowers over bright green aromatic foliage. Compact variety. Prefers a moist soil. Hardy. Up to 60cm. [Collect Only]

Persicaria 'Silver Dragon' (Knotweed 'Silver Dragon'): Multi-hued silver/red/green leaves throughout the summer. Great as foliage filler. Height to 60cm.

Persicaria bistorta 'Hohe Tatra' (Bistort 'Hohe Tatra'): Upright pink spikes from May to July. Flowers slightly smaller and later than 'Superba'. Hardy. Height to 45cm.

Solidago x luteus 'Lemore' (Goldenrod 'Lemore'): A shorter form of Goldenrod with panicles of bright lemon yellow daisy-like flowers. Great as a cutflower. Prefers a sunny spot. Hardy. Up to 60cm.

Tradescantia (Andersoniana Group) 'Innocence' (Spider lily 'Innocence'): Three-petalled pure white flowers with purple tinged anthers. Strappy bright green foliage.