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PLANTSand Answers 41ST ANNUAL BE-A-BETTER-GARDENER SALE FRIDAY & SATURDAY, MAY 11 & 12 (MOTHER’S DAY WEEKEND)

Annuals • Perennials • Vegetables • Herbs Expert Gardening Advice • Rare Trees & Shrubs Woodland • Containers • Tools Answers to your Garden Questions Garden Book Sale & Silent Auction

Plus... a variety of craft, food, and garden vendors!

EARLY BUYING FOR BBG MEMBERS: FRIDAY 9:00 -11:00 AM. Hours for the general public: Friday 11:00 am – 5:00 pm, Saturday 9:00 am – 5:00 pm.

at the intersection of Rt. 183 & 102, Stockbridge, MA berkshirebotanical.org ANNUALS AND TROPICALS Stipa tenuissima Phlox paniculata ‘David’ v NENC Abutilon pictum ‘Victory’ Streptocarpus saxorum ‘Concord Blue’ Phlox paniculata ‘Jeana’ v NENC ‘Kudos Coral’ Verbena bonariensis Phlox paniculata ‘Norah Leigh’ v NENC Alocasia ‘Sarian’ Potentilla atrosanguinea ‘Scarlet Starlet’ Aloe ‘Delta Lights’ PLANTS FOR BEDS AND BORDERS Rheum palmatum var. tanguticum Alpinia zerumbet Acanthopanax sieboldianus ‘Variegatus’ Rosa ‘Hot Paprika’ Alternanthera ‘Plum Dandy’ Aconitum carmichaelii ‘Arendsii’ Rosa rubrifolia Angelica gigas f. albiflora ‘Liquorice White’ Rosa virginiana USN Asparagus meyerii Alcea ‘Mars Magic’ v Sanguisorba ‘Little Angel’ Begonia ‘Angel Falls Soft Pink’ Alcea ‘Polarstar’ v Thalictrum rochebrunianum Begonia ‘Exotic Bossa Nova Pink Glow’ Aster ‘Wood’s Purple’ NENC Thuja ‘Anna’s Magic Ball’ USNC Begonia ‘Sparks Will Fly’ Aster alpinus ‘X Pink’ v Vernonia lettermanii ‘Iron Butterfly’ NEN Begonia grandis ‘Alba’ Aster cordifolius ‘Avondale’ NENC Veronicastrum virginicum NEN Begonia luxurians Aster lateriflorus ‘Lady in Black’ NENC Veronicastrum virginicum ‘Lavendelturm’ NENC Bidens ‘White Delight’ Aster novae-angliae ‘Alma Potschke’ NENC Bidens ferulifolia ‘Campfire Fireburst’ Aster oblongifolium ‘October Skies’ USNC PLANTS FOR DRY AREAS Canna ‘Sky Hawk’ Baptisia ‘Carolina Moonlight’ v USNC Armeria maritima ‘Nifty Thrifty’ USNC Carex elata ‘Aurea’ Baptisia ‘Purple Smoke’ v USNC Armeria maritima ‘Rubrifolia’ USNC Centaurea gymnocarpa ‘Colchester White’ Buddleia ‘Pugster Blue’ Cerastium tomentosum v Colocasia esculenta ‘Black Coral’ Callicarpa dichotoma Delosperma ‘Mesa Verde’ v Colocasia esculenta ‘Blue ’ Caryopteris ‘Lil’ Miss Sunshine’ v Delosperma ‘Moonstone’ v Colocasia esculenta ‘Mojito’ Caryopteris x clandonensis ‘Arthur Simmonds’ Delosperma ‘Opal’ v Cuphea ramosissima ‘Fairy Dust Pink’ Clethra alnifolia ‘Pink Spires’ NENC Iberis sempervirens ‘Whiteout’ v Dahlia ‘Bishop of Llandaff’ Delphinium ‘Black Knight’ v Lavandula angustifolia ‘Munstead’ v Dahlia ‘Mystic Fantasy’ Delphinium ‘Blue Bird’ v Lavandula x intermedia Phenomenal v Dahlia ‘Mystic Illusion’ Delphinium elatum ‘Blue Lace’ v Lewisia cotyledon hybrids v USNC Dianthus ‘Green Ball’ Delphinium elatum ‘Cobalt Dreams’ v Opuntia humifusa NEN Dichondra argentea ‘Silver Falls’ Delphinium elatum ‘Pagan Purples’ v Ruellia humilis USN Dorotheanthus bellidiformis ‘Meezoo’ Dianthus gratianopolitanus ‘Firewitch’ v Santolina chamaecyparissus Durante ‘Golden Edge’ Echinacea ‘Rubinstern’ v USNC Saxifraga ‘Touran Red’ v Echeveria ‘Blue Atoll’ Echinacea ‘Sunrise’ v USNC Sedum ‘Wildfire’ v Echeveria ‘Boe Kari’ Echinacea ‘Tiki Torch’ v USNC Sedum rupestre ‘Angelina’ v Echeveria ‘Coral Reef Chocolate’ Echinacea ‘White Swan’ v USNC Sedum sieboldii v Echeveria ‘Giant Blue’ ‘Rocky Top’ v USNC Sempervivum ‘Brownii’ Echeveria multicaulis Echinops bannaticus ‘Blue Glow’ v Sempervivum ‘Dea’ Echeveria nodulosa Echinops ruthenicus ‘Platinum Blue’ v Sempervivum ‘Desert Bloom’ v Echeveria pulidonis Eucomis comosa ‘Sparkling Burgundy’ Sempervivum ‘Hopewell’ Echeveria runyonii ‘Topsy Turvy’ Heliopsis helianthoides ‘Summer Nights’ NENC Sempervivum ‘Moss ’ Echeveria setosa ‘Black Knight’ v Sempervivum ‘Red Heart’ Echeveria setosa ‘Arrow Shaped’ Iris ensata ‘Momogasumi’ v Sempervivum ‘Royal Ruby’ v Euphorbia hypericifolia ‘Diamond Frost’ Iris ensata ‘Variegata’ v Sempervivum ‘Ruby Heart’ v Ficus carica ‘Chicago Hardy’ Iris pallida ‘Variegata’ v Sempervivum ‘Silverine’ v Gaura ‘Karalee Petite Pink Improved’ USNC Iris setosa var. artica v Sempervivum ‘Spring Beauty’ Geranium ‘Sophie Cascade’ Iris siberica ‘Concord Crush’ v Sempervivum ‘Tip Top’ Geranium ‘Vancouver Centennial’ Iris sibirica ‘Drowsy Maggie’ v Sempervivum arachnoideum ‘Cobweb’ v x Graptoveria ‘Debbie’ Lespedeza thunbergii ‘Samindare’ Sempervivum Forest Frost’ x Graptoveria ‘Fred Ives’ Liriope spicata v Thymus citriodorus ‘Archer’s Gold’ v Helichrysum petiolare ‘White Licorice’ Lupinus polyphyllus ‘Chandelier’ v USNC Thymus praecox ‘Pink Chintz’ v Heliotropium ‘Marine’ Lupinus polyphyllus ‘Chatelaine’ v USNC Thymus pseudolanuginosus v Impatiens repens Lupinus polyphyllus ‘Gallery Blue’ v USNC Ipomoea batatas ‘Sweet Caroline Lupinus polyphyllus ‘My Castle’ v USNC PLANTS FOR OPEN, SUNNY AREAS Bewitched Green with Envy’ Lupinus polyphyllus ‘Noble Maiden’ v USNC Abelia mosanensis ‘Sweet Emotion’ v Ipomoea batatas ‘Sweet Caroline Raven’ Lupinus polyphyllus ‘The Governor’ v USNC Acanthus hungaricus v Lobelia ‘Laguna Sky Blue’ Lysimachia punctata ‘Golden Alexander’ Acanthus spinosa v Lysimachia congestiflora ‘Tiger Stripe’ Nectaroscordum siculum v Achillea ‘Moon Dust’ v Melianthus major Nipponanthemum nipponicum Achillea ‘Pink Grapefruit’ v Muhlenbergia capillaris ‘Fast Forward’ Origanum ‘Rosenkuppel’ v Agastache ‘Blue Boa’ v USNC Musa ‘Truly Tiny’ Paeonia ‘Coral Charm’ v Alchemilla erythropoda Nephrolepis exaltata Paeonia ‘Dr. Alexander Fleming’ v Alchemilla mollis v Pennisetum ‘Vertigo’ Paeonia ‘Julia Rose’ v Allium ‘Gladiator’ v Petunia ‘Black Velvet’ Paeonia ‘Krinkled White’ v Allium christophii v Phormium ‘Pink Stripe’ Paeonia ‘Lady Alexandra Duff’ v Allium lusitanicum ‘Summer Beauty’ v Plectranthus argentatus Paeonia ‘Madame Emile Debatene’ v Allium lusitanicum ‘Summer Peek-a-Boo’ v Portulaca oleracea ‘Mojave Tangerine’ Paeonia ‘Pacifica’ v Allium moly ‘Jeannine’ v Rosemarinus officinalis v Paeonia officinalis ‘Bowl of Beauty’ v Allium sphaerocephalon v Saliva nutans Papaver ‘Beauty of Livermere’ v Amsonia ‘Blue Ice’ v Salvia ‘Amistad’ Papaver ‘Princess Victoria Louise’ v Amsonia hubrichtii v USN Sanvitalia ‘Tsavo Yellow Ice’ Papaver ‘Queen Alexander’ v Artemisia ‘Powis Castle’ v Senecio candicans ‘Angel Wings’ Papaver ‘Royal Wedding’ v incarnata ‘Cinderella’ v NENC Senecio serpens ‘Blue Chalk’ Perovskia atriplicifolia ‘Blue Steel’ v Asclepias incarnata ‘Ice Ballet’ v NENC Setaria palmifolia ‘Rubra’ Perovskia atriplicifolia ‘Little Spire’ v Asclepias speciosa v USN

v Deer resistant NEN Native to New England NENC of plant native to New England USN Native to U.S. USNC Cultivar of plant native to U.S. Asclepias tuberosa v NEN Knautia macedonica ‘Mars Midget’ Aesculus parviflora USN Betula nigra ‘City Slicker’ v NENC Knautia macedonica ‘Thunder and Lightning’ Ajuga ‘Dixie Chip’ Betula nigra ‘Little King’ NENC Kolkwitzia amabilis Ajuga reptans ‘Black Scallop’ Buddleia davidii ‘Ellen’s Blue’ Leucanthemum x superbum ‘Becky’ v Anemone ‘Dreaming Swan’ Buxus micro ‘Wedding Ring’ v Liatris spicata ‘Kobold’ v USNC Anemone ‘Wild Swan’ Buxus sinica ‘Justin Brouwers’ v Liriope muscari ‘Variegata’ v Anemone canadensis NEN Calamintha nepeta ‘Blue Cloud’ v Metasequoia glyp. ‘Gold Rush’ Anemone japonica ‘Pamina’ v Camassia leichtlinii USN Miscanthus sinensis ‘Gracillimus’ Anemone tomentosa ‘Robustissima’ v Centaurea ‘Amethyst Dream’ Miscanthus sinensis ‘Variegatus’ Aquilegia ‘Blue and White’ v Centaurea montana ‘Amethyst in Snow’ v Molinia caerulea ‘Skyracer’ Aquilegia canadensis v NEN Cephalaria gigantea Monarda ‘Petite Delight’ v USNC Aquilegia canadensis ‘Little Lanterns’ v NENC Cercis canadensis NEN Monarda didyma ‘Raspberry Wine’ USNC Aquilegia vulgaris ‘Heidi’ v Chamaecyparis nootkatensis ‘Pendula’ USNC Nepeta ‘Kitten Around’ v Aquilegia vulgaris ‘Leprechaun Gold’ v Chelone glabra ‘Black Ace’ NENC Nepeta ‘Walker’s Low’ v Aquilegia vulgaris ‘Ruby Port’ v Chelone lyonii ‘Hot Lips’ v USNC Nepeta faassenii ‘Purrsian Blue’ v Aralia cordata ‘Sun King’ NENC Elf’ v NENC Panicum virgatum ‘Hot Rod’ NENC Arum italicum Coreopsis verticillata ‘Sweet Marmalade’ v NENC Panicum virgatum ‘Northwind’ v NENC Aruncus aethusifolius Coreopsis x ‘Enchanted Red’ v NENC Panicum virgatum ‘Shenandoah’ v NENC Aruncus dioicus NEN Coreposis verticillata ‘Zagreb’ v NENC Pennisetum alopecuroides ‘Hamelin’ v Aruncus dioicus ‘Kneiffii’ NENC Cornus sanguinea ‘Arctic Sun’ Penstemon digitalis ‘Husker Red’ v NENC Aster divaricata ‘Eastern Star’ NENC Cornus sericea NEN Penstemon digitalis ‘Pocahontas’ v NENC Astilbe ‘Bressingham Beauty’ v Cotinus coggygria ‘Royal Purple’ Persicaria polymorpha v Astilbe arendsii ‘Fanal’ v Cotinus coggygria ‘Winecraft Black’ Phlomis tuberosa Astilbe chinensis ‘Pumila’ v Cotoneaster apiculata ‘Tom Thumb’ Physocarpus opolifolius ‘Center Glow’ NENC Astilbe japonica ‘Delft Lace’ Cryptomeria japonica ‘Black Dragon’ Physostegia virginiana ‘Miss Manners’ NENC Astilbe japonica ‘Montgomery’ v Dendranthema morifolium ‘Sheffield Pink’ v Potentilla fruticosa ‘Red Ace’ NENC Astilbe japonica ‘ Blossom’ v Eragrostis spectabilis NEN Pycnanthemum muticum v NEN Astrantia ‘Red Joyce’ Eryngium planum ‘Blue Hobbit’ v Rhus aromatic ‘Gro-Low’ NENC Astrantia major Eryngium x zabelii ‘Big Blue’ v Rudbeckia fulgida var. fulgida v USN Astrantia major ‘Roma’ Eryngium yuccifolium v USN Salix purpurea ‘Nana’ Astrantia major ‘Ruby Cloud’ Eupatorium dubium ‘Baby Joe’ v NENC Scabiosa columbaria ‘Blue Note’ ‘Weston’s Innocence’ Eupatorium fortunei ‘Pink Frost’ Schizachyrium scoparium ‘Smoke Signal’ NENC Bergenia ‘Sakura’ v Euphorbia dulcis ‘Chameleon’ v Sisyrinchium angustifolium ‘Lucerne’ NENC Brunnera ‘Sea Heart’ v Filipendula ‘Red Umbrellas’ v Spiraea ‘Ogon’ v Brunnera macrophylla ‘Jack Frost’ v Filipendula rubra ‘Venusta’ v NENC Spiraea japonica ‘Double Play Candy Corn’ v Caltha palustris v NEN Gaillardia grandiflora ‘ Apricot Shades’ v USNC Sporobolus heterolepis USN Calycanthus ‘Venus’ NENC Gaillardia grandiflora ‘Arizona Red Shades’ v USNC Stachys byzantina ‘Helen Von Stein’ v Calycanthus floridus v USN Geranium ‘Azure Rush’ v Stachys monieri ‘Hummelo’ v Carex flacca ‘Blue Zinger’ v Geranium pratense ‘Dark Reiter’ v Syringa x hyacinthiflora ‘Pocahontas’ Carex pennsylvanica v NEN Geranium pratense ‘Splish-Splash’ v Thuja ‘Filips Magic Moment’ USNC Cephalanthus occidentalis ‘Sputnik’ NENC Geranium sanguineum ‘Album’ v Vaccinium angustifolium NEN Cercidiphyllum japonicum Geranium sanguineum ‘Max Frei’ v Vernonia lettermannii USN Chasmanthium latifolium USN Geranium wlassovianum v Weigela ‘Sonic Bloom Pink’ v Chionanthus virginicus NEN Halesia carolina USN Weigela ‘Spilled Wine’ v Clethra barbinervis Helenium ‘Bandera’ v NENC Comptonia peregrina NEN Helenium ‘Mardi Gras’ v NENC VINES Convallaria majalis v Helenium ‘Siesta’ v NENC Akebia quinata Cyclamen hederifolium Helianthus ‘Lemon Queen’ USNC Aristolocia durior USN Dicentra cucullaria NEN Hemerocallis ‘August Blush’ Campsis radicans ‘Atomic Red’ v NENC Dicentra eximia v NEN Hemerocallis ‘Bella Lugosi’ Campsis radicans ‘Flava’ v NENC Dicentra spectabilis v Hemerocallis ‘Dominic’ Clematis ‘Abilene’ v Dicentra spectabilis ‘Alba’ v Hemerocallis ‘Don Stevens’ Clematis ‘Bonanza’ v Dicentra spectabilis ‘Gold Heart’ v Hemerocallis ‘Early Snow’ Clematis ‘Bourbon’ v Digitalis ‘Polkadot Polly’ v Hemerocallis ‘Funny Valentine’ Clematis ‘Diana’s Delight’ v Digitalis ferruginea v Hemerocallis ‘Holiday Delight’ Clematis ‘Giselle’ v Digitalis grandiflora v Hemerocallis ‘Hot Town’ Clematis ‘Vancouver Daybreak’ v Digitalis purpurea ‘Apricot Beauty’ v Hemerocallis ‘Hyperion’ Clematis ‘Vancouver Deb Dahl’ v Digitalis purpurea ‘Candy Mountain Peach’ v Hemerocallis ‘Itsy Bitsy Spider’ Clematis ‘Vancouver Morning Mist’ v Digitalis purpurea ‘Dalmation Peach’ v Hemerocallis ‘Mighty Chestnut’ Clematis ‘Vancouver Sea Breeze’ v Digitalis purpurea ‘Dalmation Rose’ v Hemerocallis ‘Orange Smoothie’ Clematis heracleifolia ‘Mrs. Robert Brydon’ v Digitalis purpurea ‘Snow Thimble’ v Hemerocallis ‘Outrageous’ Clematis jackmanii v Digitalis x mertonensis v Hemerocallis ‘Prince Red Bird’ Clematis paniculata v Enkianthus campanulatus Hemerocallis ‘Raspberry Suede’ Hydrangea anomala subsp. petiolaris ‘Enchantress’ v Hemerocallis ‘Scottish Fantasy’ Lonicera sempervirens ‘Major Wheeler’ NENC Epimedium ‘Orange Queen’ v Hemerocallis ‘Vera Biaglow’ Lonicera x brownii ‘Dropmore Scarlet’ Eupatorium rugosum ‘Chocolate’ NENC Hibiscus ‘Starry Starry Nite’ NENC Polygonum aubertii Galium odoratum Hypericum frondosum ‘Sunburst’ USNC Gentiana septemfida var. lagodechiana Indigofera kirilowii PLANTS FOR WOODLAND EDGE Geranium ‘Orkney Cherry’ v Itea virginica ‘Henry’s Garnet’ USNC Acer palmatum ‘Red Emperor’ Geranium macrorrhizum ‘Ingwersen’s Variety’ v Juncus effusus ‘Spiralis’ NENC Acer palmatum ‘Waterfall’ Geum ‘Flames of Passion’ Knautia ‘Melton Pastels’ Acer pseudosieboldianum Geum ‘Mai Tai’

v Deer resistant NEN Native to New England NENC Cultivar of plant native to New England USN Native to U.S. USNC Cultivar of plant native to U.S. Geum ‘Tequila Sunrise’ Thalictrum flavum subsp. glaucum Gillena trifoliata NEN Tricyrtis ‘White Tower’ v THANK YOU TO OUR Hamamelis x intermedia ‘Diane’ Tricyrtis hirta ‘Miyazaki’ v Helleborus ‘Confetti Cake’ v Trollius ‘New Moon’ PLANT SALE VENDORS: Helleborus ‘ Night’ v Viburnum plicatum tomentosum ‘Watanabe’ Helleborus ‘Pink Frost’ v Viburnum trilobum ‘Wentworth’ NENC Antiques at 7 Oaks Helleborus ‘Platinum Rose’ v labradorica NEN Helleborus ‘Shooting Star’ v Actaea pachypoda NEN Blueberry Hill Café v Helleborus ‘Spanish Flare’ Chiveflower Designs Heuchera ‘Green Spice’ v USNC WOODLAND PLANTS Heuchera ‘Midnight Rose Select’ v USNC Anemonella thalictroides NEN Daffodils & More Heuchera ‘Midnight Rose’ v USNC Arisaema triphylum NEN Heuchera ‘Spellbound’ v USNC Asarum canadense v NEN Farm at Miller’s Crossing Heuchera villosa ‘Caramel’ v USNC Asarum europaeum v Gray Raven Farm Heuchera villosa ‘Citronelle’ USNC Asarum splendens v Heuchera villosa var. macrorrhiza v USNC Asplenium trichomanes NEN Hort and Pott Heucherella ‘Solar Eclipse’ v Athryium niponicum ‘Godzilla’ v Hosta ‘American Halo’ Athyrium angustum f. rub. ‘Lady in Red’ I’m N.O.T. Gonna Get Ticked Hosta ‘Autumn Frost’ Athyrium filix-femina ‘Minutissima’ NENC Joe Oliverio Photography Hosta ‘Blue Ivory’ Athyrium niponicum ‘Apple Court’ v Hosta ‘Cameo’ Athyrium niponicum pictum v Miss Hall’s School Hosta ‘Cool as a Cucumber’ thalictroides NEN Nature Works Land Care Hosta ‘Curly Fries’ Cimicifuga ‘Hillside’s Black Beauty’ v Hosta ‘Dream Queen’ Cimicifuga racemosa v NEN Oesco, Inc. Hosta ‘First Frost’ Cimicifuga simplex ‘Pink Spike’ v Hosta ‘Frances Williams’ Clintonia borealis NEN Peter Thorne Hosta ‘Golden Tiara’ Cornus canadensis NEN Round Designs Hosta ‘Guccomole’ Corydalis lutea Hosta ‘Gypsy Rose’ Dennstaedtia punctilobula NEN Sam’s Wooden Bowls Hosta ‘Hudson Bay’ Dodecatheon meadia USN Hosta ‘Island Breeze’ Dodecatheon meadia ‘Aphrodite’ USNC Savor Hosta ‘Krossa Regal’ Dryopteris erythrosora ‘Brilliance’ Sunbug Solar Hosta ‘Liberty’ Epimedium ‘Space Invaders’ v Hosta ‘Moonstruck’ Epimedium ‘Spine Tingler’ v The Peach Tree Hosta ‘Pandora’s Box’ ‘Bandit’ v Hosta ‘Sum and Substance’ Epimedium grandiflorum ‘Lilafee’ v Hosta ‘Vulcan’ Epimedium rubrum v Houstonia caerulea NEN Epimedium versicolor ‘Cherry Tart’ v ‘Snow Queen’ Epimedium x perralchicum ‘Frohnleiten’ v Hydrangea serrata ‘Blue Bird’ Gaultheria procumbens NEN Hydrangea serrata ‘Tuff Stuff’ Hepatica americana NEN Iris cristata ‘Sky Blue Giant’ NENC Hydrastis canadensis NEN Lamiastrum galeobdolon ‘Herman’s Pride’ diphylla NEN Lamium maculatum ‘Anne Greenway’ Pachysandra procumbens USN Lamium maculatum ‘Pink Pewter’ v peltatum NEN Ligularia ‘Britt Marie Crawford’ Polygonatum biflorum nana ‘Prince Charming’ Lobelia cardinalis NEN Polygonatum falcatum ‘Variegatum’ Matteuccia struthiopteris ‘Jumbo’ v NENC Polygonatum humile Mazus reptans Polygonatum x ‘Striatum’ Ophiopogon japonicus ‘Compactus’ Polystichum acrostichoides NEN Osmunda cinnamomea v NEN Pteridium aquilinum NEN Osmunda regalis v NEN Rhododendron ‘Purple Gem’ Phlox stolonifera ‘Sherwood Purple’ NENC Rhododendron ‘Purpureum Grandiflorum’ Polemonium reptans ‘Stairway to Heaven’ v NENC Sanguineria canadensis Primula japonica ‘Miller’s Crimson’ v Smilacina racemosum NEN Primula kisoana v Tiarella ‘Candy Striper’ v Primula veris ‘Sunset Shades’ v erectum NEN Pulmonaria ‘Diane Clare’ Trillium grandiflorum NEN Pulmonaria ‘Moonshine’ v Trillium sessile NEN Rodgersia ‘Rot Laub’ Uvularia grandiflora NEN Sagina subulata Sagina subulata ‘Aurea’ Sambucus ‘Lemony Lace’ Sambucus nigra ‘Black Lace’ Sambucus nigra ‘Laced Up’ Sassafras albidum v NEN Sinocalycanthus raulstonii ‘Hartlage Wine’ Stephanandra incisa ‘Crispa’ Symphytum ‘Goldsmith’ v Syneilesis aconitifolia Syneilesis palmata

v Deer resistant NEN Native to New England NENC Cultivar of plant native to New England USN Native to U.S. USNC Cultivar of plant native to U.S.