Ajuga reptans (Bugle): Superb ground cover plant with purplish green leaves and blue flower spikes in summer. Very attractive to bees

Ajuga reptans 'Catlin's Giant' (Bugle 'Caitlin's Giant'): Superb ground cover plant with bronze-purple leaves and blue flower spikes in summer. Semi-evergreen. Very attractive to bees.

Anemone Dreaming Swan = 'Macane004' (PBR): Pure white flowers with lavender reverse. Hardy. To 60cm.

Anemone Wild Swan 'Macane001' (PBR): Pure white flowers with a blueish purple reverse. Flowers on and off all summer. Needs part shade and good moist soil. Hardy. To 50cm.

Campanula punctata 'Wedding Bells' (Bellflower 'Wedding Bells'): White hose-in-hose or semi-double bell-like flowers, infused with pink. Flower throughout the summer. Hardy. Up to 60cm.

Centaurea 'John Coutts' (Knapweed 'John Coutts'): Large almost fluffy soft pink flowers over green, slightly felty foliage with white undersides. To 40cm. Hardy.

Centaurea 'Silver Feather' PBR: A choice perennial with fluffy lilac-pink flowers over beautiful silver finely divided foliage. Evergreen. Full sun and good drainage. To 40cm. Hardy.

Chaerophyllum hirsutum 'Roseum' (Hairy chervil 'Roseum'): Flat heads of tiny pink flowers over finely cut green foliage. Long flowering from early summer. Informal and soft. Up to 50cm. Hardy. [Collect Only]

Festuca amethystina: Evergreen grass with elegant, dusky purple arching flower stalks very early in season, for a grass.To 50cm.

Filipendula 'Red Umbrellas' (Meadowsweet 'Red Umbrellas'): Green leaves, deeply veined with crimson, with clouds of fluffy pink flowers. Compact variety. Prefers a moist soil. Hardy. Up to 70cm. [Collect Only]

Geranium 'Alan Mayes' (Cranesbill 'Alan Mayes'): Long flowering geranium with bright blue flowers with purple veining. Clumps of hairy green leaves, turning red in autumn. Hardy. Up to 45cm.

Geranium 'Brookside' (Cranesbill 'Brookside'): A reliable, robust variety with large rich blue flowers over a mound of deeply divided leaves. Height to 45cm. Hardy

Geranium 'Ivan' (Cranesbill 'Ivan'): Vibrant magenta-pink flowers with a dark black centre above yellow green leaves. Leaves turn red in autumn. Hardy. Up to 50cm. [Collect Only]

Geranium 'Orion' (Cranesbill 'Orion'): A dome of deeply divided foliage, smothered in large blue flowers from early summer onwards

Geranium maculatum 'Beth Chatto' (Spotted cranesbill 'Beth Chatto'): Very pretty palest purple flowers held above attractive green foliage. To 50cm. Hardy.

Geranium maculatum 'Vickie Lynn' (Spotted cranesbill 'Vickie Lynn'): Pale lavender flowers above a clump of fresh green divided leaves. Prefers soil that doesn't dry out in summer. Hardy. Up to 45cm.

Geranium Rozanne = 'Gerwat' (PBR) (Geranium 'Rozanne'): Noted for its large blue, white centred flowers and very long flowering period. A fine border geranium. Doesn't run. To 30cm. Hardy

Geranium sanguineum 'Max Frei' (Bloody cranesbill 'Max Frei'): Neat mounds of bright pink flowers over dense, semi-evergreen foliage. Does well in sun or shade. To 30cm. Hardy.

Geranium sylvaticum 'Album' (Wood cranesbill): Upright stems of white saucer-shaped flowers above deeply divided leaves. Prefers moist shadier spots. Hardy. Up to 70cm.

Geranium x magnificum 'Rosemoor' (Purple cranesbill 'Rosemoor'): A mass of large purple flowers in early summer. Large, slightly felty leaves with good autumn colour. To 50cm.

Geum 'Bell Bank' (Avens 'Bell Bank'): Large coral pink flowers over a rosette of crinkled leaves.To 40cm. Hardy.

Geum 'Borisii': A shorter form with vivid orange-red flowers on upright stems and semi-evergreen foliage. Vigorous and good for front of border. Hardy. Up to 30cm.

Geum 'Georgenberg' (Avens 'Georgenburg'): Gold flowers held atop reddish stems in early to mid-summer. To 30cm. Hardy

Geum 'Mai Tai' (PBR) (Avens 'Mai Tai'): Semi-double, pale apricot flowers above green foliage. Long-flowering. Hardy. Up to 45cm.

Geum 'Prinses Juliana' (Avens 'Prinses Juliana'): Bright orange flowers held on tall stems above mounds of rounded foliage. Flowers for ages and reflowers when cut back.

Geum 'Rijnstroom': A bright orange semi-double flower in late spring. Prefers a moist soil and sunny spot but can tolerate light shade. Hardy. Up to 50cm.

Geum 'Rusty Young' (Avens 'Rusty Young'): Warm golden yellow flowers splashed with coppery red.

Geum 'Savannah Sunset' (Avens 'Savannah Sunset'): Apricot, semi-double flowers with red buds held on red stems above rosettes of rounded hairy leaves. Long flowering. Hardy. Up to 35cm.

Geum 'Stacey's Sunrise' (Avens 'Stacey's Sunrise'): Pale yellow flowers on compact stems above rosettes of rounded hairy leaves. Semi-evergreen. Long flowering. Hardy. Up to 30cm.

Geum 'Totally Tangerine' (PBR) (Avens 'Totally Tangerine'): Lovely single-flowered bright orange flowers held on erect stems above mounds of green foliage. Hardy. Up to 60cm.

Geum 'Werner Arends' (Avens 'Werner Arends'): An old cultivar which stays compact. A bright clean orange flower on an upright stem above a rosette of crinkly leaves. Hardy. Up to 35cm.

Geum rivale 'Leonards Variety' (Avens 'Leonards Variety'): Coppery- rose flowers held above rosettes of rounded, softly hairy foliage. To 40cm. Hardy

Geum Scarlet Tempest = 'Macgeu001' (PBR) (Avens 'Scarlet Tempest'): Scarlet, semi-double flowers held on tall stems above rosettes of rounded hairy leaves. Long flowering. Hardy. Up to 50cm.

Hemerocallis 'Stella de Oro' (Day Lily 'Stella de Oro'): Pale yellow fragrant flowers with a darker yellow throat. Grass-like green foliage. Hardy. Up to 50cm.

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.

Lamium orvala: A woodland perennial with large, crushed strawberry colour, lipped flowers in early summer. Hardy. Up to 50cm.

Nepeta racemosa 'Walker's Low' (Catmint 'Walker's Low'): Forms neat mounds of silvery green foliage, topped with masses of lavender blue flowers in early summer. Up to 60cm. Hardy.

Nepeta x faasenii (Catmint): A compact variety of catmint with mounds of aromatic silvery green foliage and lavender blue flowers.Hardy. Up to 45cm.

Nepeta x faasenii 'Purrsian Blue': A compact variety of catmint with mounds of aromatic silvery green foliage and lavender blue flowers.Hardy. Up to 45cm.

Phlox divaricata 'May Breeze': A beauty with strongly scented pure white flowers. Semi-evergreen foliage and spreading habit. A great cottage garden plant.Hardy. To 30cm [Collect Only]

Phlox paniculata 'Monica Lynden Bell' (Phlox 'Monica Lynden Bell'): Palest sorbet pink flowers, nicely scented. Not too tall

Phlox subulata 'Lilacina' (Moss phlox 'Lilacina'): Pale blue star-like flowers above a cushion of hairy narrow leaves. Good for alpine beds or rockeries. Hardy. Up to 15cm.

Polemonium 'Heaven Scent' (PBR) (Jacob's Ladder Heaven Scent'): Lovely dark, purple foliage and stems in spring which contrasts well with the pale lilac purple bell like flowers. Lightly scented. Hardy. Up to 50cm.

Polemonium reptans 'Stairway to Heaven' (PBR) (Jacob's Ladder 'Stairway to Heaven'): Superb variety with attractive variegated foliage and lavender blue flowers. To 50cm. Hardy

Potentilla 'Arc-en-ciel' (Cinquefoil 'Arc-en-ciel'): Double, rich red flowers flecked with yellow at the petal edges. Easy and trouble-free plant, ideal for well drained borders in sun or part shade [Collect Only]

Salvia nemorosa 'Caradonna' (Balkan Clary 'Caradonna'): Rich purple spikes in early summer - just in time for Chelsea Flower Show at which is widely used.To 50cm. Hardy

Sanguisorba obtusa 'Alba' (Japanese burnet - white): A lovely white form of Sanguisorba obtusa with softly hanging white bottle brushes

Saxifraga x urbium (London Pride): Wiry stems topped with dainty pale pink flowers over ground evergreen rosettes of green leaves with creamy yellow markings.

Sedum spathulifolium 'Purpureum' (Purple stonecrop): Mat forming, fleshy purple rosettes with an attractive grey cast when young. Yellow flowers in summer.

Tellima grandiflora 'Forest Frost' (Fringecups): Slender spikes of pinkish flowers late spring to mid-summer. Semi-evergreen reddish foliage. Great in shade. Height to 30cm. Hardy

Thalictrum 'Black Stockings' (Meadow rue 'Black Stockings'): Fluffy flowerheads, darker purple than T. aquilegiifolium and with dark, near black stems. Hence the saucy name. [Collect Only]

Thalictrum aquilegiifolium (French meadow rue): Fluffy heads of pale pink or white flowers in early summer

Veronica austriaca 'Crater Lake Blue' (Speedwell 'Crater Lake Blue'): Vivid blue spikes above a mound of green foliage.To 30cm. Hardy.