Aconitum napellus 'Album' (White Monkshood): White hooded flowers over finely divided frondy foliage. A great plant for shade, even quite dry shade. Flowers at about 1.2m Hardy. All parts are highly toxic [Collect Only]

Aruncus 'Horatio' (Goat's beard 'Horatio'): A very elegant form of the familiar goat's beard, with fine sprays of creamy flowers in summer. To 1.2m.

Aster 'Little Carlow' (Syn. Symphyotrichum 'Little Carlow' (cordifolium hybrid)): Large sprays of small purplish blue flowers in autumn. Very reliable, easy to grow perennial. Up to 1m.

Astrantia maxima (Largest masterwort): Two-tone pink/green, long-lasting, starry flowers. Best in a bit of shade and moist soil. Hardy. Up to 60cm. [Collect Only]

Campanula lactiflora 'Prichards Variety' (Milky bellflower 'Prichards Variety'): Clusters of warm blue flowers on tall stems in mid-summer. To 1m. Hardy.

Crocosmia 'Hellfire': A tall variety with vibrant red flowers with a darker red thoat above strappy green leaves. Hardy. To 1.2m.

Crocosmia 'Paul's Best Yellow': Arching sprays of golden yellow flowers in late summer. A vigorous grower. Fully hardy in well drained soils. To 1m

Dierama 'Blackberry Bells' (Angel's Fishing Rod): Large bells of deep-purple maroon flowers held on tall, slender stems above grass-like foliage. Hardy. To 1.2m

Digitalis grandiflora (Yellow foxglove): Perennial foxglove with yellow bell-shaped flowers above clumps of evergreen lance-shaped leaves. Bee-friendly. Hardy. Up to 1m.

Echinops bannaticus 'Blue Globe' (Globe thistle): Tall upright stems of bright blue globe flowers above clumps of spiny, grey-green leaves. Bee-friendly. Hardy. Up to 1.2m.

Epilobium angustifolium 'Stahl Rose' (Rosebay Willowherb. Syn. Chamaerion angustifolium 'Stahl Rose''): Slender spires of pale pink flowers in late summer. Spreads rapidly through underground runners. To 1m. Hardy. [Collect Only]

Gaura lindheimeri 'The Bride': Beautiful airy stems of white flowers in mid to late summer. Best in full sun, in well drained soil and a sheltered spot. Stems up to 1m.

Hemerocallis 'Stafford' (Day lily 'Stafford'): Large, velvety red flowers with a gold throat in mid-late summer. Height to 70cm. Hardy.

Hemerocallis citrina (Long yellow day lily): Fragrant lemon, yellow lily flowers on long stems above green strappy foliage. Flowers open in evening. Hardy. Up to 1.2m.

Hemerocallis lilioasphodelus (yellow daylily): Fragrant lemon yellow lily flowers above green strappy foliage. Semi-evergreen. Flowers typically open in the evening. Hardy. Up to 1m.

Persicaria amplexicaulis 'Alba' (white flowered red bistort): Spikes of white flowers in late summer. Large oval pointed leaves. Hardy. Up to 1.2m.

Persicaria amplexicaulis 'Amethyst Summer' (Red Bistort 'Amethyst Summer'): New colour form with dark pink flowers with hint of purple. Large oval pointed leaves. A robust plant that can grow almost anywhere. Hardy. To 1m

Physostegia virginiana (Obedient plant): Spires of light pinkish purple flowers on slowly spiralling stems.

Sanguisorba 'Chocolate Tip': Spikes of burgundy-red bobble-like flowers appear in late summer over green leaves tinged with brown. Hardy. Up to 1m. [Collect Only]

Sanguisorba 'Pink Tanna' (Burnet 'Pink Tanna'): Fluffy Pink flower bobbles mid-late summer over attractive fern-like foliage. Good in damp soil, sun or shade. Hardy. Up to 1m.

Thalictrum delavayi 'Hewitt's Double' (Chinese meadow rue 'Hewitt's Double'): Tiny purple pom-pom flowers dance airily above ferny grey-green foliage. Height to 1.2m. Hardy [Collect Only]