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Cold Temperate

Cold Temperate: East, Midwest, and Mountain West

This is a large and highly populated region covering much the eastern and central United States, as well as much of the warmer parts of Canada. This region corresponds with USDA Zones 4–7, and Sunset Zones 2–4, 6, 11, and 32–43.

Perennial in all of the Cold Temperate zone:

Allium fistulosum Welsh onion

Allium tricoccum ramps

Allium tuberosum garlic chives

Apios americana groundnut

Aralia cordata udo

Asparagus officinalis asparagus

Bunias orientalis Turkish rocket

Camassia cusickii Cusick’s camass

Camassia leichtlinnii Leichtlin’s camass

Camassia quamash camass

Camassia scillioides wild hyacinth

Chenopodium bonus-henricus good king Henry

Cicorium intybus chicory

Crambe maritima sea kale

Dioscorea japonica jinenjo

Dioscorea opposita Chinese yam

Helianthus tuberosa sunchoke

Hemerocallis daylily

Laportaea canadensis wood nettle

Levisticum officinale lovage

Malva moschata musk mallow

Matteuccia struthiopteris ostrich fern

Nasturtium officinale watercress

Oenanthe javanica water celery

Oxyria digyna mountain sorrel

Petasites japonicus fuki

Phytolacca americana pokeweed

Polygonatum biflorum canaliculatum giant Solomon’s seal

Rheum rubarbarum rhubarb

Rumex acetosa French sorrel

Rumex acetosa Profusion’ sorrel

Rumex acetosella sheep sorrel

Rumex scutatus silver shield sorrel

Sagittaria latifolia arrowhead

Scorzonera hispanica scorzonera

Sium sisarum skirret

Stachys sieboldii Chinese artichoke

Taraxacum officinale dandelion

Tilia spp. linden

Urtica dioica nettles

Perennial in warmer parts of the Cold Temperate zone, or perennial with protection:

Allium ampeloprasum perennial sweet leek

Allium cepa aggregatum potato onion

Allium cepa aggregatum shallot

Allium cepa proliferum walking onion

Arundinaria gigantea canebrake bamboo

Asphodeline lutea yellow asphodel

Atriplex halimus saltbush (try as a dieback perennial)

Beta vulgaris maritima sea beet

Brassica oleracea acephala Tree Collards’, ‘Walking Stick Kale’

Brassica oleracea acephala tropical tree kale

Brassica oleracea acephala Western Front’ perennial kale

Brassica oleracea botrytis perennial broccoli, including ‘9 Star’

Brassica oleracea ramosa branching bush kale, including ‘Dorbentons’

Brassica oleracea wild cabbage

Canna edulis achira

Cedrella sinensis fragrant spring tree

Colocasia esculenta taro & Celery Stem’ taro (with protection, in warmest parts, as a leaf crop only)

Cyperus esculentus sativa chufa

Dioscorea bulbifera air potato

Diplotaxis spp. sylvetta arugula (probably as dieback perennial in

warmer areas)

Nelumbo nucifera water lotus (hardy as long as roots are below freeze

line)

These bamboos are fully hardy in the warmest areas of the Cold Temperate zone, they may lose their leaves in the middle portions, and can be tried as dieback perennials in the coldest areas:

Phyllostachys spp. running bamboos

Sasa kurilensis chishima-zasa bamboo

Semiarundinaria fastuosa temple bamboo

Can be grown as annuals in the Cold Temperate zone:

Abelmoschus manihot edible hibiscus

Alternanthera sissoo sissoo spinach

Basella alba malabar spinach

Brassica oleracea alboglabra gai lon

Capsicum annum Perennial Capsicum’ sweet pepper

Cnidoscolus chayamansa Stingless’ chaya

Coccinia grandis Sterile’ perennial cucumber

Colocasia esculenta taro, cocoyam, eddo, dasheen (as a leaf crop only)

Cynara scolymus Imperial Star’ globe artichoke

Diplotaxis muralis & sylvetta arugula

Dolichos lablab hyacinth bean

Eleocharis dulcis water chestnut

Gynura crepioides Okinawa spinach

Hibiscus acetosella cranberry hibiscus

Ipomoea aquatica water spinach

Ipomoea batatas sweet potato

Lycopersicon spp. tomato

Manihot esculenta cassava (as a leaf crop only)

Momordica charantia bitter gourd

Moringa oleifera moringa

Moringa stenopetala moringa

Oxalis tuberosa oca (with fall season extension)

Phaseolus coccineus runner bean

Phaseolus lunatus lima bean

Phaseolus polysantus cache bean

Physalis peruviana goldenberry

Physalis pruinosa ground cherry

Psophocarpus Day Length Neutral’ winged bean

Sagittaria sinensis Chinese arrowhead

Sauropus androgynous katuk

Smallianthus sonchifolia yacon (needs long season)

Solanum melongena & spp. eggplant

Solanum tuberosum & spp. potato

Tetragonia tetragonioides New Zealand spinach

Xanthosoma brasiliense belembe

Xanthosoma saggitifolium tannier, yautia, malanga (as a leaf crop only)

Xanthosoma violaceum violet-stem taro (as a leaf crop only)