2020 Perennial Reference Contents Perennials
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2020 Perennial Reference Contents Perennials ..................................................................1-37 Roses .......................................................................38-40 Herbaceous Shrubs..................................................41-42 Small Fruits ..............................................................42-43 Tree Fruits .....................................................................43 Vines ........................................................................44-45 Water Plants .............................................................46-49 Perennial Plant Of The Year As awarded by the Perennial Plant Association Aralia cordata ‘Sun King’ 2020 Stachys monieri ‘Hummelo’ 2019 Allium ‘Millenium’ 2018 Asclepias tuberosa 2017 Anemone x hybrida ‘Honorine Jobert’ 2016 Geranium x cantabrigiense ‘Biokovo’ 2015 Panicum virgatum ‘Northwind’ 2014 Polygonatum odoratum ‘Variegatum’ 2013 Brunnera macrophylla ‘Jack Frost’ 2012 Amsonia hubrichtii 2011 Baptisia australis 2010 Hakonechloa macra ‘Aureola’ 2009 Geranium Rozanne ® ‘Gerwat’ 2008 Nepeta ‘Walker’s Low’ 2007 Dianthus gratianopolitanus ‘Firewitch’ 2006 Helleborus x hybridus 2005 Athyrium nipponicum ‘Pictum’ 2004 Leucanthemum ‘Becky’ 2003 Phlox ‘David’ 2002 Calamagrostis acutiflora ‘Karl Foerster’ 2001 Scabiosa columbaria ‘Butterfly Blue’ 2000 Rudbeckia fulgida var. sullvanti ‘Goldsturm’ 1999 Echinacea purpurea ‘Magnus’ 1998 Salvia ‘May Night’ / ‘Mainacht’ 1997 Penstemon digitalis ‘Husker Red’ 1996 Perovskia atriplicifolia 1995 Astilbe ‘Sprite’ 1994 Veronica ‘Sunny Border Blue’ 1993 Coreopsis verticillata ‘Moonbeam’ 1992 Heuchera micrantha ‘Palace Purple’ 1991 Phlox stolonifera 1990 Key to symbols used in this reference: Full sun G Groundcover Partial sun E Evergreen Prefers shade N Native s Deer resistant Unless noted, heights given are for plants not in flower. HARDY PERENNIALS This reference is meant to provide basic information about many of the perennials available from Christensen's. We hope to enable you to identify substitutions more easily when specific varieties are not in stock. ACHILLEA - Yarrow s Blooms June-September. Drought tolerant. ‘Coronation Gold’: Golden-yellow. 30-36" Little Moonshine ‘ACBZ0002’: Yellow 9-12" ‘Moonshine’: Sulfur-yellow, silvery foliage. 18" millefolium cultivars: Tutti Frutti Series: ‘Apricot Delight’: Pink-apricot-red. 21" ‘Pink Grapefruit’: Lavender-pink. 18" ‘Pomegranate’: Dark red. 29" Seduction Series: ‘Saucy Seduction’ rose-pink. 25" ‘Strawberry Seduction’: Red. 18" ‘Sunny Seduction’: Butter yellow. 25" New Vintage Series: Violet ‘Balvinolet’: Violet, cream eye 12-14" PENHOW® 'Heartthrob': Velvet red 18" ‘Paprika’: Red with gold center. 18" ‘Red Beauty’: Red. 24" ‘Red Velvet’: Rose-red. 23-29" ‘Summer Pastels’: Mixed. 24" ‘Summer Wine’: Burgundy, aging rose. 2-3' ACONITUM - Monkshood Blooms summer or early fall. These varieties generally do not require staking. All parts are poisonous. x cammarum ‘Bicolor’: White-edged blue. 3-4' x c. ‘Stainless Steel’: Steel-blue. 3-5' carmichaelii ‘Arendsii’: Deep blue. 3-4' henryi ‘Sparks Variety’: Violet-blue. 4' napellus: Deep blue. 36" n. ‘Album’: White. 36" ACORUS - Japanese Sweet Flag E Flowers inconspicuous. Prefers to be kept moist. calamus: Green, straplike, flws yellow. Native. 2-3' c. ‘Variegata’: Green with white streaks. 2-3' gramineus ‘Ogon’: Chartreuse and cream. 15" ACTAEA - Snakeroot, Bugbane Flowers in late summer. Requires well-drained, moist soil. racemosa: Green leaves, white flower. Native. 3-4' simplex Atropurpurea Group: ‘Brunette’: Purple leaves, white flower. 3-4' ‘Black Negligee’: Bronze-purple lvs, white flw. 4-5' ‘Chocoholic’: Bronze-purple lvs, white flw. 2-3' ‘Hillside Black Beauty’: Purple lvs, white tinged pink. 2' ‘Pink Spike’: Purple leaves, pink flw. 3-4' simplex ‘James Compton’: Green leaves, white flw. 4' s. ‘White Pearl’: Green leaves, white flw. 3-4' Fax (734) 454-1414 - 1 - Fax (888) 454-9866 ADENOPHORA - Ladybells Campanula-like spires of mid-summer blooms. confusa FAIRYBELLS ™ ‘Gaudi Violet’: violet 18-20" lilifolia: Violet-blue, bell-shaped. 24" AEGOPODIUM - Snow on the Mountain G Aggressive / invasive groundcover. Blooms June. p. ‘Variegatum’: White. 6" AGASTACHE - Anise Hyssop s Blooms mid to late summer. Heat and drought tolerant. x ‘Blue Fortune’: Lavender-blue spikes. 3.5x3' ‘Heatwave’: Magenta-pink. 18-23" Kudos ™ series: Kudos ™ ‘Ambrosia’: Orange & pink blend. 17" Kudos ™ ‘Coral’: Deep coral. 20" Kudos ™ ‘Yellow’: Yellow. 20" ‘Rosie Posie’: Hot pink-magenta. 18-22" rugosa ‘Little Adder’: Lavender-blue. 18-21" AJUGA - Bugleweed sG Mid-spring flower spikes are purple in most varieties. reptans: Bronzy green foliage. 6" r. Black Scallop ‘Binblasca’: Maroon-purple. 6" r. ‘Bronze Beauty’: Bronze foliage. 6" r. ‘Burgundy Glow’: Burgundy, cream, green. 6" r. ‘Catlin’s Giant’: Large bronze leaves. 6-8" r. ‘Chocolate Chip’: Narrow purple & green lvs. 6" r. ‘Golden Glow’: Yellow & green, infused red. 6" ALCHEMILLA - Lady’s Mantle E Low, sprawling habit. Blooms June. Will self-sow. mollis: Yellow-green. 12-18" m. ‘Thriller’: Grows larger than mollis. 24" ALLIUM - Ornamental Onion Grass-like foliage with distinctive aroma. Summer bloom. giganteum: 5" dia. purple globe. July. 48" x ‘Globemaster’: 5" dia. purple globe. July. 30-36" x ‘Millenium’: Rosy-purple. July-Aug 15-20" senescens 'Blue Eddy': Lilac-pink. Aug-Sept. 8-12" sphaerocephalum ‘Hair’: Green wisps. 12-18" tanguticum ‘Summer Beauty’: Lavender, Jun-Jul. 18" thunbergii ‘Ozawa’: Red-violet. Sept-Oct. 10-12" AMSONIA - Blue Star Willow-like foliage, yellow fall color. Blooms May-June. ciliata ‘Halfway to Arkansas’: Pale blue. 2-3' hubrichtii: Sky blue. 1-3' tabernaemontana: Pale blue. 1-3' t. ‘Blue Ice’: Dark blue. 12-15" (888) 454-8733 - 2 - (734) 454-1400 ANEMONE - Windflower Late summer / early fall bloom. Prefers rich, moist soil. hupehensis var. japonica: Rosy, semidouble. 2-2.5' h. Fantasy Series: ‘Cinderella’: Pink, single. 18-24" ‘Red Riding Hood’: Magenta-red. 12-18" ‘Pocahontas’: Double rose-pink. 12-18" h. ‘Pamina’: Pink, semidouble. 3' h. ‘Pink Saucers’: Pink, single. 2-3' h. Pretty Lady Series: ‘Pretty Lady Diana’: Soft pink, single. 16" ‘Pretty Lady Emily’: Deep pink, double. 16" ‘Pretty Lady Maria’: White, single. 16" x hyb. ‘Honorine Jobert’: White, yellow eye. 30-36" x hyb. ‘Loreley’: Pale pink, semidouble. 23-31" x hyb. ‘Lucky Charm’: Dark pink, single. 30-36" x hyb. ‘Margarette’: Deep pink, semidouble. 3' x hyb. ‘Party Dress’: Pink, semidouble. 3' x hyb. ‘Prince Henry’: Rose, yellow eye. 3' x hyb. ‘Serenade’: Pink, semidouble. 16" x hyb. ‘September Charm’: Pink, yellow eye. 30" x hyb. ‘Whirlwind’: White, semidouble. 2.5-3' Swan Series: Elfin Swan ™ ‘Macane017’: White, dwarf 14" Wild Swan ™ ‘Macane001’: White, single 18-21" sylvestris - Snowdrop Anemone: White, single. This one blooms May-June. 12-15" tomentosa ‘Robustissima’: Mauve-pink, single. 3-4' AQUILEGIA - Columbine Mid-spring to early summer. Tends to die back mid- summer. alpina: Native. Blue. 1-2' canadensis: Native. Red & yellow. 1-2' c. ‘Little Lanterns’: Red & yellow. 10-12" caerulea ‘Origami Mix’: Mixed, long bloom. 14-18" c. ‘Songbird Mix’: Mixed. 14-18" c. ‘Sunshine’: Yellow, double. 24" x ‘Biedermeier’: Mixed colors, compact. 12-15" x ‘Crimson Star’: Crimson w/white center. 23-29" x ‘McKana Hybrids’: Mixed colors, large blooms. 2-3' x ‘Swan Mix’: Mixed, large flowers. 18-21" vulgaris ‘Barlow Series’: Blue, black or pinkish. 3' in bloom. v. ‘Clementine Mix’: Mixed, double. 12-18" v. ‘Winky Series’: Mixed colors. 2-2.5' Fax (734) 454-1414 - 3 - Fax (888) 454-9866 ARABIS - Rockcress GE Spring blooms on low, spreading plant. x ‘Compinkie’: Magenta pink, late spring. 6-9" caucasica ‘Snow Cap’: White, March-May. 6-9" ARALIA - Spikenard Ornamental foliage. Blooms mid-late summer. cordata ‘Sun King’: Gold leaves, white flowers 3x3' ARCTOSTAPHYLOS - Bearberry GEN Blooms April-May. Slow growing. Red fall & winter color. uva-ursi: White tinged pink. 6-12" ARMERIA - Thrift, Sea Pink E Grass-like foliage, blooms May-June. maritima cultivars: Rosy-red. 8-10" m. ‘Bloodstone’: Magenta-red. 8-10" m. ‘Rubrifola’: Pink, red leaves. 8-10" ARTEMISIA - Wormwood Grown for silver-gray foilage. Do not allow to flower. ludoviciana ‘Silver King’: Narrow leaves. 2' l. ‘Valerie Finnis’: Wide leaves. 2-3.5' x ‘Powis Castle’: Feathery foliage. 2-3' schmidtiana ‘Silver Mound’: Feathery foliage. 8-10" stelleriana Silver Brocade ‘Boughton Silver’ 6-12" ARUNCUS - Goat’s Beard Astilbe-like foliage. Feathery blooms in early summer. aethusifolius: Ivory, lacy foliage, very dwarf. 8-12" diocus: Ivory, to 6' in bloom. 4' d. ‘Kneiffii’: Ivory, foliage dissected. 24-36" x ‘Misty Lace’: Ivory, takes heat. 30" ASARUM - Ginger G Flowers inconspicuous. Tolerates sun if kept moist. canadense: Native, deciduous large leaves. 6" europaeum: Evergreen, glossy green leaves. 6" splendens: Evergreen, green and silver leaves. 4-6" ASCLEPIAS - Milkweed Ns Summer-blooming native. Slow to emerge in the spring. incarnata: Pink, tolerates moist soil. 3-4' i. ‘Cinderella’: Pink. 36-48" tuberosa - Butterfly Weed: Orange. 2-3' Key to symbols used in this reference: Full sun G Groundcover Partial sun E Evergreen Prefers shade N Native s Deer resistant Unless noted, heights given are for plants not in flower. (888) 454-8733 - 4 - (734) 454-1400 ASTER Most are fall bloomers, September-October. Dragon ™ ‘Yodragon’: Lilac-blue. 12-23" ericoides ‘Snow Flurry’: White. 6-8" Hazy ™ ‘Yohazy’: Pink-raspberry. 15-18" Kickin