PERENNIAL PLANTS Plant Name Common Name Height Colour Bl Time Special Conditions Country S. Europe, NW Acanthus mollis Bear's Breeches to 5' (1.5m) white fls. with purple shaded bracts l summer z7 sun/pt.shade,well drained, moist good soil Africa Acanthus spinosus Bear's Breeches to 5' (150cm) white flowers with purple bracts lsp-msum z5 sun/pt.shade, good soil, tolerates dry heat Italy to W Turkey Aconitum Monkshood large dark blue flowers l summer z5 sun/part shade, cool moist fertile soil Aconitum Monkshood dark blue flowers l summer z5 sun/part shade, cool moist fertile soil Monkshood (all parts are Aconitum carmichaelii to 6' (190cm) violet or blue flowers l sp to fall z3 sun/pt.shade, cool, moist, fertile soil Russia poisonous) Monkshood (all parts are Aconitum carmichaelii 'Barker's Variety' to 6' (190cm) deep violet flowers early fall z3 sun/pt.shade, cool, moist, fertile soil poisonous) Aconitum 'Ivorine' (syn.A.septentrionale Monkshpood (all parts are to 36" (90cm) ivory flowers l spring z5 sun/pt.shade, cool, moist, fertile soil garden origin 'Ivorine') poisonous) Aconitum lycoctonum ssp.vulparia Monkshood (all parts are to 5' (1.5m) pale yellow flowered form sum/e fall z4 sun/pt.shade, cool, moist, fertile soil Europe (A.orientale of gardens) poisonous) Acorus gramineus 'Variegatus' Variegated Japanese Rush to 10" (25 cm) creamy white and green striped leaves summer z5 full sun, wet or very moist soil E Asia z4 shade/pt.sh.moist mod-fertile soil.Survives under Actaea erythrocarpa (syn. A.spicata var. rubra) 24" (60cm) racemes of white flowers,red berries late spring Euro. E.Asia conifers Actaea racemosa (was Cimicifuga Black Cohosh to 8' (2.4m) white flowers summer z3 partial shade, moist, fertile, humus-rich soil N.E. USA. racemosa) Maidenhair Fern (syn.A.pedatum Adiantum aleuticum <N> to 30" (75cm) deciduous or semi-evergreen z3 pt./shade, moist, well-drained, mod.fertile soil W.N.America ssp.aleuticum) Adiantum venustum Himalayan Maidenhair Fern to 12" (30cm) evergreen above -10C z5 pt.shade, moist, well-drained, mod.fertile soil Himalayas Agapanthus (dwarf form) Lily of the Nile dwarf blue flowers summer sun, fertile, moist, well-drained soil garden oridin Agapanthus 'Castle of Mey' African Blue Lily to 24" (60cm) deep blue flowers summer z7 sun, fertile,moist, well-drained soil Agapanthus coddii Lily of the Nile to 48" (1.2m) pale blue fls.with deep blue stripes summer z9 sun, fertile, moist, well-drained soilfull sun, Lily of the Nile (needs well-drained Agapanthus Headbourne Hardy Hybrids to 36" (90cm) range of bright blue flowers summer z6 sun, fertile, moist, well-drained soil garden origin soil) Agapanthus 'Midnight Blue' Lily of the Nile to 30" (75 cm) deep violet blue flowers summer z7 sun/pt.shade, any well drained soil Agapanthus 'Mosswood Hybrid' Lily of the Nile to 36" (90cm) flowers of various shades of blue summer z7 sun/pt.shade, any well drained soil Agave parryi var. huachucensis Mescal (syn A.huachucensis) lvs.to 26" (65cm) tall panicles of creamy yellow flowers summer full sun, moderately-fertile sharply-drained sun Alchemilla alpina Alpine Lady's Mantle to 6" (15cm) light green flowers summer z3 sun/pt.shade, moist humus-rich soil Europe Alchemilla mollis Lady's Mantle to 24" (60cm) yellow-green flowers summer z4 sun/pt.shade, moist, humus-rich soil Europe Allium cernuum var. album Nodding Onion to 6" (15cm) white flowers summer z6 sun, fertile, well-drained soil garden origin Allium schoenoprasum Chives to 24" (60cm) purple flowers summer z3 sun, fertile, well-drained soil Europe, Asia Allium tuberosum Garlic Chives to 20" (50cm) fragrant white flowers l summer-fall z4 sun, fertile, well-drained soil S.E.Asia Peruvian Lily (syn. A.psittacina leaves edged with white, red flowers tipped white Alstroemeria psittacina 'Variagata' ' to 36" (90cm) summer z7 sun pt./shade, fertile, moist, well-drained soil 'Royal Star') and green Amsonia to 3' (90cm) blue flowers summer z5, sun, moist, well-drained soil Anemone baldensis 8" (20cm) solitary white flowers mid-late spring z6 sun/pt.shade,moist, well-dr.humus rich soil Anemone hupehensis Chinese Anemone to 36" (90cm.) white flowered form l summer z4 sun/pt.shade, moist, fertile, humus-rich soil W.China Anemone hupehensis 'Pamina' Chinese Anemone to 24" (60cm) double, deep pink flowers late summer-fall z4 sun/pt.shade, moist, fertile, humus-rich soil Anemone hupehensis var. japonica Japanese Anemone to 36" (90cm) deep purple-pink flowers l sum-e fall z4 sun/pt.shade, moist, fertile, humus-rich soil S.China, Japan Anemone multifida <N> (syn. A. magellanica) Windflower to 12" (30cm) creamy yellow flowered form e summer z2 sun/pt.shade, moist, well-dr., humus-rich soil N.America Anemone narcissiflora Windflower to 16" (40cm) white flowers summer z5 sun/pt.shade, moist, well-dr., humus-rich soil Europe, Asia Anemone nemorosa 'Alba' Wood Anemone to 6" (15cm) white flowers spring z4 sun/pt.shade, moist, well-dr., humus-rich soil Europe Anemone rivularis Windflower to 36"(90cm) white flowers, petals often blueish undersides lsp/summer z6 sun/pt.shade, moist, well-dr., humus-rich soil N.India/SWChina Anemone tomentosa syn. A. vitifolia 'Robustissima' to 5' (1.5m) pale pink flowers late summer-fall z4 sun/pt.shade, moist, fertile, humus-rich soil China Anemone x hybrida 'Honorine Jobert' Japanese Anemone to 48" (1.2m) pure white flowers late summer-fall z4 sun/pt.shade, moist, fertile, humus-rich soil garden origin Angelica sylvestris 'Vicar's Mead' (biennial) to 3' (90cm) pink fls. bronze foliage m-lsummer z4 sun, deep, moist, fertile, loamy soil Anthemis tinctoria 'Kelwayi' Golden Marguerite to 24" (60cm lemon-yellow flowers lsp/ef z3 sun, moderately fertile, well-drained, sandy soil garden origin Anthemis tinctoria 'Sauce Hollandaise' Golden Marguerite to 24" (60cm) pale cream flowers e summer z3 sun, moderately fertile, well-drained, sandy soil garden origin Anthericum liliago St. Bernard's lily to 36" (90cm) trumpet-shaped,lily-like, white flowers lspr-esum z7 full sun, any fertile, well-drained soil Europe Eur., W Asia, N Anthriscus sylvestris 'Ravenswing' Cow Parsley to 36" (90cm) creamy white fls., lvs. green turning purple-black spring z7 sun/pt.shade, well-drained soil Africa Aquilegia Columnbine yellow flowers spring z4 sun/pt.shade,fertile,moist, well-dr.soil Aquilegia Columnbine to 12"(30cm) pink flowers spring z4 sun/pt.shade, fertile, moist, well-drained soil Aquilegia 'Beries and Cream' Columbine Aquilegia buergeriana Columbine to 24" (60cm) purple-brown to yellow flowers summer z7 sun pt/shade, fertile, moist, well-drained soil Japan, Korea Aquilegia canadensis Canadian Columbine to 24" (60cm) red-yellow flowers msp/msu z3 sun/pt.shade, fertile, moist, well-drained soil E. N. America Aquilegia chrysantha Columbine to 36" (90cm) yellow, sometimes tinged pink flowers sp/su z3 sun/pt.shade, fertile, moist, well-drained soil S. W. USA Aquilegia flabellata var.pumila Columbine to 8" (20cm) blue & white flowers (rarely all white) spring z3 sun/pt.shade, fertile, moist, well-drained soil E Asia, Japan Aquilegia formosa "N" Columbine to 36" (90cm) red-yellow flowers lspr-esum z4 sun/pt.shade, fertile, moist, well-drained soil Aquilegia x hybrids Columbine to 24"(60cm) mixed colours spring z4 sun/pt.shade, fertile, moist, well-drained soil garden origin late spring early Arisaema heterophyllum Dancing Crane Cobra Lily to 3' (90cm) light purple tinged green flowers z7a part sun to light shade summer Arisaema ringens to 12" (30cm) green and purple striped hooded spathe e summer z6 cool, pt. shade, moist, well-dr., humus-rich soil Chi.,Kor.,Jap. Arisarum proboscideum Mouse Plant to 4" (10cm) brownish-purple and white spathes spring z7 part shade, humus-rich, moist soil Apennines Aristea capitata Blue Sceptre to 1.5 m blue flowers mid spring z8 full sun winter rain dry summers Armeria welwitschii Thrift to 12" (30cm) white to bright pink flowers z8 sun, well-drained, poor to mod.fertile soil, open site W.Portugal Armoracia rusticana Horseradish white flowers, but grown for the root z5 sun/light shade; any garden soil. Arrhenatherum elatius ssp. bulbosum Bulbous Oat Grass to 12' (30cm) green and white striped leaves sp/sumer z5 sun/pt.shade, well-drained fertile soil garden origin 'Variegatum' Europe,Turkey,N. Arum italicum Lords and Ladies to 12" (30cm) greenish-white spathes; red fruit early summer z6 sun/pt.shade, well-drained, humus-rich soil Africa Asarum europaeum European Wild Ginger to 6" (15cm) purplish flowers spring z4 shade/pt.shade, mod.fertile,humus-rich,moist well-dr. soil W Europe Asclepias tuberosa Butterfly Weed to 24" (60cm) yellow or orange flowers summer z4 sun, fertile, well-drained, loamy soil garden origin C&E Asphodeline lutea King's Spear to 5' (1.5m) fragant bright yellow flowers l spring z6 full sun, mod.fertile,well-dr.,sandy,loamy,deep soil Mediterranean Aspidistra elatior 'Milky Way' (evergreen, white-speckled lvs.,, cream/maroon fls.on Cast-Iron Plant to 2' (60cm) e summer z7 shade, moist, well-drained, fertile, sandy loam garden origin usually houseplant)) rhizomes Asplenium scolopendrium Hart's tongue Fern to 28" (70cm) tongue-like glossy green fronds summer z6 pt.shade, moist, well-drained, humus-rich soil N.Amer.,Europe Aster KICKIN Lavender Propogation Prohibited to 36" (90cm) single lavender flowers late summer z5 sun, moist, rich soil Aster KICKIN pink Propogation Prohibited to 36" (90cm) pink flowers late summer z5 sun, moist, rich soil Aster novi-belgii (new name- Michaelmas Daisy to 48" (1.2m) mauve-blue flowered form late summer-fall z4 sun/pt.shade, moist, well cultivated, fertile soil Symphyotrichum novi-belgii Aster novi-belgii 'Chequers' Michaelmas Daisy to 36" (90cm) single violet flowers late summer z7 sun/pt.shade, moist well-cultivated fertile soil Astilbe chinensis False Spirea 12" (30cm) pink flowers summer z4 sun/pt.shade,moist,fertile,humus-rich soil Astilbe chinensis False Spirea to 24" (60cm) panicles of pinkish-white flowers l summer z4 pt.shade/shade,rich moist soil Astilbe chinensis var.