Acacia baileyana 'Purpurea'

Fine blue-grey foliage, flushed purple. Yellow mimosa flowers in Feb. Small tree, borderline hardy, likes sun & drainage 15ft

BH, Tr, Ev, DrSu, Yr, DR, Fo, Ye, Bl, Warm

Achillea millefolium 'Cassis'

Darkest wine red flat-topped flowerheads. Hardy, likes sun & drainage 24"

H, P, DrSu, Su, ESu, Ro, LB, DR, CF, Rd, Gr, Warm

Acis autumnalis AGM

syn. Leucojum autumnalis

Autumn Snowflake

Little white dangling bells from very thin brown stems in autumn. Slender dark leaves. Bulbs. Like sun and drainage 6"

H, P, Bu, DrSu, Au, SS, Ro, Wh, Gr, Cool

Aconitum hemsleyanum

Climbing Monkshood

Clusters of deep blue-purple flowers in late summer. A twining climber with maple-like leaves. Hardy herbacous perennial. Good scrambling through an early flowering shrub. Poisonous 10ft

H, P, Cl, LShSu, Su, Au, RR, DR, LB, Fo, Bl, GGr, Fresh

Aconitum hemsleyanum 'Red Wine'

Climbing Monkshood

Clusters of deep purple-red hooded flowers in late summer. A twining climber with maple-like leaves. Good scrambling through an early flowering shrub. Herbaceous, dies back in winter. Sun or part shade. Poisonous 10ft

H, P, Cl, LShSu, Su, Au, Fo, LB, DR, RR, Pu, GGr, Fresh

Aconitum napellus 'Album'

White Monkshood. Hooded white flower. Fairly short, early-blooming, poisonous 36"

H, P, LShSu, Su, SR, RR, CF, DR, Wh, Gr, Fresh

Actaea pachypoda 'Silver Leaf'

White Baneberry, Dolls Eyes

Misty grey leaves. Clusters of fluffy white flowers are followed by clusters of shiny white berries, each with a black dot (hence "Dolls Eyes"). Berries are poisonous but very long-lasting and attractive, each one on a little red stem. Likes some shade and moisture 30" (5 seeds)

H, P, DaSh, Au, Su, Sp, SR, RR, DR, Sh, WF, Fo, Wh, Si, Fresh

Adlumia fungosa

CLIMBING FUMITORY

Hardy biennial climber. Up to 20 feet. Swags of pale pink lockets among ferny foliage. Likes shade and protection from wind. Easy. 20ft.

H, B, Cl, Wood, Su, Pi, Gr, Cool

Aeonium tabuliforme

Dead flat spirals of flat succulent green leaves. Invites patting. After 3-4 years erupts with yellow flowers. Houseplant 2" x 5"

T, P, Ye, Warm

Aethionema grandiflorum

syn. Aethionema pulchellum

Pale pink flowers in round tight-packed heads, blue-grey leaves. Hardy, needs sun & drainage 6 - 8"

H, P, DrSu, ESu, Ro, LB, Pi, GGr, Cool

Agapanthus inapertus

Deep purple to navy blue drooping narrow bells on stout stems. Hardy, likes sun 40"

H, P, DrSu, Su, SR, WF, RR, Ro, LB, DR, CF, Bl, Gr, Warm

Agapanthus short dark blue Headbourne hybrids

Hardy Lily of the Nile.

Seed of dark blue shorter Headbourne hybrid plants. Needs sun and good drainage. Herbaceous 20"

H, P, DrSu, LB, CF, RR, SR, DR, Bl, Gr, Warm

Agastache aurantiacus 'Apricot Sprite'

Spikes of large coral-orange tubular flowers, fragrant minty-liquorice leaves. Fairly hardy, likes sun and drainage 20"

BH, P, DrSu, Au, Su, ESu, SR, RR, DR, CF, LB, Ro, Fr, Co, GGr, Warm

Agastache 'Bolero'

Fat rose-purple spikes above fragrant dark leaves. Likes sun and drainage 14"

H, P, DrSu, Au, Su, WF, Ro, LB, Fr, Pu, Gr, Warm

Agastache 'Heather Queen'

Rosy-purple flowers on fragrant greyish leaves. Likes sun and good drainage, borderline hardy 24"

BH, P, DrSu, ESu, Su, Au, DR, Fr, LB, Ro, RR, WF, Pu, GGr

Agastache nepetoides

Tall spikes of creamy flowers. Bold almost black seed haeds on sturdy stems last all winter. Loved by bees. May self sow. Sun or light shade 5ft

H, P, LShSu, Su, Au, SS, WF, Sh, RR, LB, DR, DF, CF, Wh, Gr, Warm

Agastache 'Rose Mint'

syn. Agastache pallididflora neomexicana

Spikes of pink flowers, fragrant leaves. Likes sun & drainage 15"

H, P, DrSu, Au, Su, CF, DR, RR, SR, Fr, LB, WF, Pi, Gr, Warm

Agastache rugosa 'Golden Jubilee'

Blue spikes of flowers, compact bright gold sweetly scented foliage. Hardy, likes sun & drainage 18"

H, P, DrSu, Au, Su, CF, DR, RR, WF, SR, Fr, LB, Bl, Go, Warm

Agastache rupestris

Coral flowers on bushy plants. Fine grey-green fragrant leaves. Fairly hardy, sun and drainage 20"

H, P, DrSu, Au, Su, CF, DR, RR, SR, Fr, LB, Ro, Co, GGr, Warm

Ageratina ligustrina

syn. Eupatorium micranthum.

Evergreen shrub. Dainty white flowerheads in late summer and autumn. Very attractive to insects. Sun or light shade, sheltered from cold winds. Likes good drainage 6-10ft

BH, P, Shr, Ev, LShSu, Au, Su, Fo, LB, RR, DR, CF, WF, Wh, Gr, Cool

Ageratum corymbosum

4-6ft giant Ageratum! Lavender blue puffs of flower on dark velvety leaves. Tender shrub 4ft

T, Shr, Con, Au, Su, ESu, CF, DR, RR, SR, LB, La, MBlk, Warm

Agrostemma 'Ocean Pearl'

Corn Cockle

Beautiful white corn cockle with thin speckled line down centre of each petal. Larger flower than other corn cockles. Hardy annual 30"

H, A, DrSu, Su, ESu, Wh, Gr, Warm

Agrostemma 'Purple Queen'

Corn Cockle

Beautiful purple corn cockle. Larger flower than other corn cockles. Hardy annual 30"

H, A, DrSu, Su, ESu, Pu, Gr, Warm

Albuca shawii

Narrow foliage with stems of deep yellow almond-scented flowers early summer. Borderline hardy bulb. Flowers 1st year from seed if sown early. Sow autumn uder cover, or early spring 24"

BH, Bu, DrSu, ESu, Su, Ro, LB, Ye, Gr, Cool

Alcea rosea 'Nigra'

BLACK HOLLYHOCK

Big shining black wide open flowers on sturdy 6ft stems. Perennial but best replaced frequently to limit rust 6ft

H, B, DrSu, Su, WF, CF, RR, DR, SS, Blk, Gr, Warm

Allium carinatum ssp. pulchellum AGM

Arching sprays of small purple flowers like an exploding firework. Keeps its colour when dried. Blooms July-Aug. Well-named, 'beautiful'. Hardy bulb, likes sun and drainage 24"

H, Bu, DrSu, Su, Ro, DR, RR, SR, Pu, Gr, Cool

Allium carinatum ssp. pulchellum Album AGM

Arching sprays of small pure white flowers like an exploding firework. Keeps its colour when dried. Blooms July-Aug. Well-named, 'beautiful'. Hardy bulb, likes sun and drainage 24"

H, Bu, DrSu, Su, Ro, DR, RR, SR, Wh, Gr, Cool

Allium cernuum AGM

Lady's Leek

Nodding deep pink small bells clustered at tip of slender stems. Clump-forming hardy bulbs, can be easily divided 12"

H, P, Bu, DrSu, Su, ESu, DR, Ro, RR, SR, Pi, Gr, Cold

Allium cristophii AGM

syn. A. albopilosum

Perfect 8" sphere of shining lavender stars on 15" stem. Long-lasting wonderful seedhead. Sun & drainage 15"

H, Bu, ESu, CF, DR, LB, RR, Sh, SR, SS, WF, La, Gr, Cold

Allium cyathophorum AGM

Nodding small pointed purple bells clustered at tip of slender stems. Clump-forming hardy bulbs, can be easily divided. Unusually, it tolerates shady moist conditions 8"

H, P, Bu, LShSu, Su, ESu, Ro, DR, RR, SR, SS, WF, Pu, Gr, Cold