Agastache 'Blue Boa' (PBR) (giant hyssop 'Blue Boa'): Excellent new form of Agastache with much fatter spikes of vibrant purple-blue flowers, with aromatic foliage. Hardy. Up to 80cm. [Collect Only]

Briza media (Lesser quaking grass): Semi-evergreen grass with beautiful delicate dangling flower heads. Short lived perennial but it will self-seed around. Up to 70cm.

Centaurea orientalis: Bright yellow flowers emerge from attractive papery buds. Prefers a well-drained soil and a sunny spot. Attractive to bees. Hardy. Up to 90cm. [Collect Only]

Echium vulgare (Viper's bugloss): Hardy biennial with spikes of bright blue flowers in early summer. Full sun. Good for a wildlife garden attracting lots of pollinators. Up to 75cm.

Geranium phaeum 'Lily Lovell' (Dusky cranesbill 'Lily Lovell'): Large, rich purple flowers with white centre. Petals swept back. Hardy. Flowers early in the season. To 80cm.

Geum 'Mrs Bradshaw' (Avens 'Mrs Bradshaw'): Large double crimson-orange flowers in early-summer - a very eye-catching plant. Height to 70cm. Hardy

Lychnis flos-cuculi 'White Robin' (White Ragged Robin): A pretty white form of our native Ragged Robin. Starry white flowers in early summer. Thrives in damp, part-shaded spots.

Lythrum virgatum 'The Rocket' (Wand loosestrife 'The Rocket'): Slender upright spires of deep pink flowers from early to late summer. Likes moist conditions. Hardy. Up to 90cm. [Collect Only]

Melica altissmima 'Alba': Deciduous grass with green strappy leaves and delicate sprays of white flowers. Very tactile plant. Hardy. Up to 90cm.

Veronica 'Purpleicious Harmony' (PBR) (Spiked speedwell 'Purpleicious'): Spikes of dark-purple flowers over a mound of shiny green leaves. Long-flowering and excellent as a cut flower. Hardy. Up to 50cm. [Collect Only]