30-60cm. Annual. Lavender-blue flowers with dark violet calyces, summer to autumn. Very pretty! Aromatic. Well-drained soil, sun.

90cm. Spikes of violet-blue flowers in summer. Fertile, well-drained soil in full sun.

90 x 30cm. Deep blue flowers in mid-summer to autumn. Initial growth is upright, then has a tendency to sprawl. Keep frost-free in winter.

Sorry, none available this year.

60-90cm. Deep blue-purple flowers in candelabra-shaped inflorescences. Main flowering in early to mid-summer, with some flowers produced into autumn. Fertile, well-drained soil, sun.

75cm. Deep violet flowers on a bushy shrub, from July to November. Hardy in warmer areas, in fertile, well-drained soil in sun.

1.2-2m. A handsome plant, with evergreen attractive foliage, and spikes of rusty red flowers from late summer to autumn. Fertile, moist but well-drained soil in sun or part shade. Keep frost-free in winter. Good in a container.

Sorry, none available this year.

100cm. Dark green, crinkled foliage. Deep blue flowers late summer-autumn. Fertile soil in sun or part shade. Over-winter frost-free.

90 x 50cm. Clump-forming perennial, bearing spikes of deep blue-purple flowers with a white marking, all summer. Best in full sun, in humus-rich moist but well-drained soil.

50-100 x 40cm. Vivid red, velvety flowers from late summer onwards. Not hardy, but continues to flower through the winter in frost-free conditions. Fertile soil in sun or part shade.

Sorry, none available this year.

250 x 90cm. Large, deep blue flowers with almost black calyces, in late summer to autumn. Needs moisture-retentive soil, and will do well on clay soils. Sun or part shade. Protect from frost.

120-170x 90cm. Similar to above, but with sky-blue flowers and green calyces. Hardy in warmer areas in a sheltered position.

1.5-2m. Dense spikes of indigo-blue flowers from summer into winter. Attractive to bees. Fertile soil, sun or part shade. Keep frost-free in winter.

Sorry, none available this year.

1.5m. Deep pink flowers with a large, unopening terminal bud, from late summer until frosts. Fertile, moist but well-drained soil. Needs a sheltered sunny spot, or keep frost free.

30cm. Feathered Sage. Finely divided, fern-like foliage. Whorls of pale violet, 'upside-down' flowers in summer. Dislikes winter wet.

30-40 x 60cm. Evergreen silver-grey foliage, with pale lavender-blue flowers in early to mid-summer. Fertile, well-drained soil in full sun. Culinary herb. Good for sage tea.

Sorry, none available this year.

60-100 x 40-90cm. Evergreen sub-shrub, with white flowers and velvety purple to lavender calyces, flowering through the winter under protection.

Sorry, none available this year.

90cm. Vivid red flowers. Habit and conditions similar to above.

Sorry, none available this year.

90cm. Deep pinkish-red flowers. Habit and conditions similar to above.

60cm. Rich reddish-violet flowers. Habit and conditions similar to above. Reasonably hardy - survived winter 2009-10!

45-60 x 45cm. Tuberous perennial, with vivid blue flowers from mid-summer to autumn. Fertile, well-drained soil in sun or part shade. Hardy in warmer areas, or lift tubers and keep frost free in winter

Similar to above, with light blue flowers.

90 x 30cm. Showy panicles of lavender-blue flowers produced in early to mid-summer. Humus-rich, fertile soil in full sun. Short-lived perennial. Self seeds.

przewalskii *** 150 x 90cm. Spikes of purplish-blue flowers all summer. Humus-rich, moist but well-drained soil in sun or part shade (water well until established).

70cm. Rich purplish-red flowers in summer. Well-drained soil in full sun in a sheltered spot.

Similar to above, but both flowers and bracts are white.

80cm. Deep red flowers all summer. Very floriferous.

uliginosa 170-200 x 90cm. Produces spikes of sky-blue flowers in late summer and autumn. Needs moist soil and sun in summer, but does not like to lie wet in winter. Provide a protective dry mulch in late autumn, and protect the new growths from the attention of slugs in spring!

60-90cm. Pink flowers. The x jamensis salvias are hybrids between S. microphylla and S. greggii. They make bushy shrubs, hardy in warmer areas (-8C) in a sunny, well-drained, sheltered spot. They flower from mid-summer through autumn, and make good cotainer plants.

60-90cm. Creamy flowers with pink blush. Similar habit and conditions to above.

50 x 90cm. Evergreen shrub, with finely cut, aromatic foliage, bearing pale yellow 'button' flowers in mid-summer. Poor to moderately fertile, well-drained soil in sun.

10-20 x 45cm. Evergreen mat-forming perennial bearing masses of pink flowers in early summer. Well-drained soil in full sun. Cut back after flowering to maintain compact habit.

Similar to above, with white flowers.

1.2m. Rhizomatous shrub, forming a compact evergreen thicket, with fragrant white flowers in winter. Reasonably fertile, moisture retentive soil in full or part shade. Shelter from cold, drying winds.

Rosettes of silver-encrusted leaves, with tall sprays of white flowers in June. Well-drained soil, preferably alkaline, but grows well for me in slightly acid soil! Will grow in a crevice.

45-60cm. Attractive evergreen rosettes, with spikes of small white flowers in summer. Fertile soil in part shade.

30cm. Deciduous or semi-evergreen, with red-purple reverse to the leaves. In late summer to autumn, sprays of starry white flowers are produced which last for weeks. Needs a moisture-retentive soil, but not water-logged, and grows in full or part shade.

30cm. Dark bristly leaves with red reverse and red stems, producing loose panicles of creamy-white flowers in autumn. Requires humus-rich, moist but well-drained soil, best in part-shade. Hardy, but it is advisable not to plant in a frost pocket.

20cm. Green leaves, with panicles of unusual pink flowers in autumn. Conditions as above.

10cm. Forms a dark green, mossy cushion, studded with deep red-pink flowers in March-April. Sun or preferably light shade.

10cm. A mossy saxifrage with evergreen, slightly hairy rosettes, and sprays of pink flowers in spring. Seems to do best in light shade.

10-12cm. Evergreen mossy foliage, with bright red-pink flowers in spring-early summer. I find they do best in light shade.

10cm. Forms a mossy, lightly variegated, evergreen cushion, studded with light pink clowers in March-April. Sun or part shade.

30 x 20cm. Mat-forming, with pale green rosettes. Panicles of white flowers with red markings in late spring and early summer. Fertile, neutral to alkaline soil in part sun.

Silvery encrusted rosettes produce long sprays of white flowers in spring. Well-drained soil in sun. Suitable for a trough.

60cm. Lavender-blue flowers in summer.

15cm. Smaller version of above.

90-100 x 40cm. Bears masses of pale yellow scabious flowers in mid to late summer.

30 x 25cm. Silvery grass-like foliage, with masses of pale lavender flowers from mid-summer onwards. Needs a very sunny well-drained soil in full sun.

As above, but with light pink flowers.

60 x 30cm. Kaffir Lily. Rhizomatous perennial producing spikes of vibrant scarlet flowers in late summer to autumn. Rich, moisture-retentive soil in a sunny position. Intolerant of drought. In warmer areas, or a cool greenhouse, will flower on into early winter,and make good cut flowers.

12cm. Deep mauve-blue flowers in spring. Ideal in dappled shade - dislikes hot and sunny situation.

10-20cm.  Dense racemes of starry blue flowers, April to June. Full or part sun, not too dry.

10-15cm. Light porcelain blue flowers with darker stripe on each petal. Jan - March. Full or part sun. Not too dry.

10cm. Bulb. Pendent bright blue flowers in spring. Well-drained, moderately fertile soil in full sun or part shade.

As above, with white flowers.

25 x 30cm. Pale yellow flowers.

15cm. Deep pink flowers.

20 x 30cm. Blue-purple flowers from June to August. Sun or part-shade. Can be vigorous when well-suited.

45cm. Leaves edged cream. Pale pink flowers in late summer/autumn.

45 cm. Lovely rose pink flowers in late summer to early autumn. Attracts bees and butterflies. Well-drained soil in sun.

15cm. Glaucous foliage, with deep pink flowers in late summer-early autumn.

25cm. Purple-grey succulent foliage, with ruby red flowers, mid to late summer. Attracts bees, etc. Well-drained soil in sun.

8cm.  Evergreen, bright green foliage, with heads of yellow flowers mid-summer to autumn.  Well-drained soil in sun. Attracts butterflies. 

10cm. Evergreen, mat-forming, silvery rosettes, with heads of yellow flowers in summer. Best in full sun in well-drained soil. Drought tolerant once established.

30-45 x 35cm. A white-flowered form of the Ice plant, flowering in late summer to autumn.

10cm. Deep red foliage, with rich pink flowers in mid-summer.

10cm. Mat-forming evergreen, with attractive pink and white margined leaves, and pink flowers in summer.

40cm. Very dark foliage, with heads of dusky plum-pink flowers in late summer-autumn. Well-drained soil in sun. Attracts bees and butterflies.

50-60cm. Large heads of pale green flowers on maroon stems. Unusual and effective. Sun or light shade.

30cm. Jagged foliage, with rich pinky-purple flowers in late summer.

15-25cm. Trailing stems of purple leaves, with dusky pink flowers in late summer to early autumn.

Up to 1.8 x 0.6 m. Clump-forming perennial, with attractive divided foliage, bearing large heads of small white frim mid-summer into autumn. Grow in moderately fertile, moist but well-drained soil in sun or part shade.

30 x 20-30cm. A beautiful, dainty plant, with pretty foliage and pendent, dusky, pinkish-purple flowers in late spring. Moist but well-drained soil, neutral to slightly acid, in full sun or part shade. Protect from the hottest midday sun. Tends to be short-lived, but comes true from seed.

Sorry, none available this year.

Attractive rosettes, each leaf with a dark maroon tip.

30cm. A tender succulent, producing bright orange composite flowers over many months. Keep frost free in winter, and not too wet.

40cm. Mauve-pink, 'fuzzy' flowers in autumn. Fertile soil in sun

50-90cm. A rare British native, growing in rough grass and open scrub on chalk. White umbels over fine dark green foliage in July-August. Biennial or perennial.

90 x 15cm. Somewhat coarse foliage, and sturdy stems topped by large green, red-bristled 'flowers' which resemble huge caterpillars! Annual, but self-seeds. Well-drained soil in full sun or part shade.

90cm. White flowers in mid-late summer. Spreads.

Sorry, none available this year.

75cm. Spikes of soft pink flowers, mid-summer to early autumn.

60cm. Maroon stems and foliage, with pink Campion flowers in summer. Fertile, moisture-retentive soil in sun or part shade.

30-60cm. Pink flowers from early to mid-summer. Fertile, moisture-retentive soil in sun or part shade. Self seeds.

10-15cm. Forms a mat of shiny green foliage, with masses of dark pink flowers from July into autumn. A useful plant for the rock garden, at a time when there's not so many flowering. Well-drained soil in sun or part shade.

10 x 30cm. Forms a compact mat, with pale flowers blushed pink, in summer. Moist but well-drained soil in full sun.

10-15cm. Bright blue-mauve flowers in summer. Similar to above but a little smaller and neater in habit.

10cm. Lavender flowers with a purple eye.

20cm. Deep mauve flowers in summer. Well-drained soil in sun.

15cm. Ice-blue flowers in summer.

Sorry, none available this year.

15cm. Light purple flowers in summer.

Sorry, none available this year.

40-50cm. Fans of evergreen, iris-like foliage forms a clump, with stems bearing numerous golden yellow flowers over many weeks in summer. Has proved hardy for many years in well-drained soil near a SW facing wall, but probably not reliably beyond minus 5C.

20-30cm. Unusual flowers, dusky yellow and purple, in summer. Reasonably well-drained soil in sun.

60-90cm. Fans of iris-like, evergreen foliage, with spikes of pale yellow flowers from early to mid-summer. Self seeds.

15cm. Rounded leathery green leaves, with spikes of dainty purple, fringed bells in spring. For a shady spot near the front of the border, or shady rock garden.

8 x 10cm. Rounded, leathery green leaves, stems covered in red hairs. Small purple bells, deeply fringed, are borne in spring. Humus-rich, moist soil in some shade.

No true flowers, but the woolly clustersof buds resemble cotton bolls.

25-30cm. Fairly lax habit, with soft, brick-red flowers for weeks in summer. Fertile, well-drained soil in sun. Safest to keep frost-free in winter, unless a very warm sheltered position. Good in containers.

60cm. Dark green leaves, with spikes of hooded rose-purple flowers in summer. Humus-rich, moderately fertile soil in sun or part shade.

30cm. Evergreen shiny scalloped foliage, with whorls of purple-maroon flowers in summer.  Requires a well-drained soil in sun. Flowers all summer.

10cm. Dark green foliage, with shining, golden crocus-like flowers from September to November. These bulbs need a well-drained soil in a sunny position.

90 x 100cm. Evergreen grass. Dark green leaves streaked orange in summer, and turning completely orange-brown in autumn/winter. Lax open panicles of flowers from mid-summer. A superb plant! Will withstand short periods to �10C. Well-drained soil, preferably in full sun. Self-seeds a little.

2m. Evergreen or semi-evergreen grass, with tall spikes bearing golden oat-like awns in summer.  Well-drained soil in some sun.

2.5m Evergreen, dark green leaves, to 75cm, with large flowerheads on tall stems in summer. Fertile, well-drained soil in sun.

40-60 x 30cm. Clump of fine green leaves, with a cloud of pale feathery flowers above, from mid-summer. Moves in the slightest breeze. Well-drained soil in full sun. Self-seeds a little.

30cm. Attractive lobed leaves, with bright yellow poppy-like flowers in summer. Deep fertile, humus-rich soil. Good in a shady area. Self-seeds occasionally..

60-110cm. Clump-forming, with pale violet, globular, scabious-like flowers from mid-summer to autumn. Very attractive to bees and butterflies, and to seed-eating birds. Prefers a rich, moist soil in sun, but will adapt to quite dry conditions in part shade. Can be naturalised in grass.

60cm. Bright blue flowers all summer.

45cm. Pale blue flowers opening from red buds.

Similar to above, with pale pink and white flowers.

40cm. Creamy white flowers, late spring-early summer.

50cm. Pale yellow flowers in late spring, becoming dormant in summer.Prefers a moisture-retentive soil in full or part shade.