Achillea filipendulina 'Gold Plate' (Yarrow 'Gold Plate'): Statuesque achillea with huge, flat gold flower heads above upright ferny foliage. A statement plant for dry, sunny borders. Hardy. To 1m.

Actaea simplex 'Pink Spike' (Baneberry 'Pink Spike' (Previously known as Cimicifuga)): Spires of scented pale pink flowers from pink buds in late summer. Reddish-brown foliage. [Collect Only]

Ageratina altissima 'Chocolate' (Snakeroot 'Chocolate'): An attractive perennial with leaves tinged with chocolate brown and delicate white flowers, much loved by bees and butterflies. Hardy. Up to 1m. [Collect Only]

Aster macrophyllus 'Twilight' (Syn. Eurybia x herveyi): Lavender-blue flowers with a yellow centre in late summer. Mildew-resistant foliage. An earlier flowering variety. Height to 1m.

Calamagrostis brachytricha (Korean feather reed grass): Arching, plump spikes of silvery purplish flowerheads turning golden brown in winter. [Collect Only]

Clematis integrifolia: Non-climbing form of Clematis with small blue bell shaped flowers. Flowers on current seasons wood in late summer. Hardy. Up to 1m.

Echinacea purpurea 'Magnus Superior' (Coneflower 'Magnus Superior'): Superb form with tall stems of pink daisy flowers with a central brown cone. Prefers full sun and good drainage. Hardy. Up to 1m.

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]

Ligularia dentata 'Desdemona' (Leopard plant 'Desdemona'): Large orange daisy-like flowers over rounded greeny-bronze foliage with purple undersides. To 1m. Hardy. [Collect Only]

Lobelia x speciosa 'Tania': Dramatic spikes of brightest pink flowers in late summer. [Collect Only]

Lobelia x speciosa 'Vedrariensis': Dramatic spikes of royal purple flowers in late summer. Needs damp soil in summer so is ideal for bog gardens. Height to 1.2m. Hardy [Collect Only]

Lysimachia barystachys (White Loosestrife): Upright spikes of white flowers in late summer. Vigorous and very attractive to bees and butterflies. To 1m. Hardy [Collect Only]

Panicum virgatum 'Shenandoah' (Switch grass 'Shenandoah'): Deciduous clump-forming grass with strappy green leaves turning purple/red in autumn, airy panicles of flowers flushed purple. Hardy. Up to 1.1m. [Collect Only]

Panicum virgatum 'Squaw' (Switch grass 'Squaw'): Deciduous grass with strappy green leaves which turn a purple red in autumn, with airy panicles of flowers flushed pink. Hardy. Up to 1m.

Persicaria amplexicaulis (Red bistort): Spikes of reddish pink flowers from July to November. Robust plant ideal for filling awkward corners. Easy and reliable. [Collect Only]

Persicaria amplexicaulis 'Blackfield' (PBR) (Red bistort 'Blackfield'): New variety with fine spikes of burgundy flowers in late summer. Easy and reliable. To 60cm. Hardy [Collect Only]

Persicaria amplexicaulis 'Firetail' (Red Bistort 'Firetail'): Tall perennial with spikes of bright pink flowers in late summer. Large oval pointed leaves. A robust plant. Hardy. Up to 1.2m. [Collect Only]

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

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.

Sanguisorba hakusinensis 'Lilac Squirrel' (Korean Burnet 'Lilac Squirrel'): Wondrously tactile, long pinky/purplish tassels in late summer. Good in any soil if not too dry. Hardy. Up to 1.2m. [Collect Only]

Sanguisorba officinalis 'Red Thunder' (Burnet 'Red Thunder'): Stems of dark-red bobble-like flowers above attractive divided foliage. Up to 1.2m. [Collect Only]