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Hardiness & climate
Cold-hardy (zone 4a or colder)
Taxa whose minimum survivable temperature is −30 °F or lower — suitable for hardiness zone 4a and colder. The Upper Plains, northern New England, the Mountain West interior.
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- max_temperature_f=-30
Showing 451–500 of 856.
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Linum lewisii Pursh LILE3Lewis flax · Linaceae -
Linum striatum Walter LISTridged yellow flax · Linaceae -
Listera convallarioides (Sw.) Nutt. ex Elliott LICO5broadlipped twayblade · Orchidaceae -
Lobelia cardinalis L. LOCA2cardinalflower · Campanulaceae -
Lomatium triternatum (Pursh) J.M. Coult. & Rose LOTR2nineleaf biscuitroot · Apiaceae -
Lonicera involucrata (Richardson) Banks ex Spreng. LOIN5twinberry honeysuckle · Caprifoliaceae -
Lonicera maackii (Rupr.) Herder LOMA6Amur honeysuckle · Caprifoliaceae -
Lonicera sempervirens L. LOSEtrumpet honeysuckle · Caprifoliaceae -
Lonicera tatarica L. LOTATatarian honeysuckle · Caprifoliaceae -
Lotus corniculatus L. LOCO6bird's-foot trefoil · Fabaceae -
Ludwigia palustris (L.) Elliott LUPAmarsh seedbox · Onagraceae -
Lupinus arcticus S. Watson LUAR2arctic lupine · Fabaceae -
Lupinus argenteus Pursh LUAR3silvery lupine · Fabaceae -
Lupinus elmeri Greene LUEL2Elmer's lupine · Fabaceae -
Lupinus nootkatensis Donn ex Sims LUNONootka lupine · Fabaceae -
Lupinus sulphureus Douglas ex Hook. LUSU5sulphur lupine · Fabaceae - Lupinus ×alpestris A. Nelson (pro sp.) [argenteus × caudatus] LUAL5Great Basin lupine · Fabaceae
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Luzula parviflora (Ehrh.) Desv. LUPA4smallflowered woodrush · Juncaceae -
Luzula spicata (L.) DC. LUSP4spiked woodrush · Juncaceae -
Lycopodium annotinum L. LYAN2stiff clubmoss · Lycopodiaceae -
Lycopus americanus Muhl. ex W.P.C. Barton LYAMAmerican water horehound · Lamiaceae -
Lycopus asper Greene LYASrough bugleweed · Lamiaceae -
Lycopus virginicus L. LYVI4Virginia water horehound · Lamiaceae -
Lysimachia thyrsiflora L. LYTH2tufted loosestrife · Primulaceae -
Machaeranthera tanacetifolia (Kunth) Nees MATA2tanseyleaf tansyaster · Asteraceae -
Mahonia aquifolium (Pursh) Nutt. MAAQ2hollyleaved barberry · Berberidaceae - Malus floribunda Siebold ex Van Houtte MAFL80Japanese flowering crab apple · Rosaceae
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Malus sargentii Rehder MASA9Sargent's apple · Rosaceae -
Malus toringo (Siebold) Siebold ex de Vriese MATO6toringo crab · Rosaceae - Malus zumi (Matsum.) Rehder MAZU2o-zumi · Rosaceae
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Medicago sativa L. MESAalfalfa · Fabaceae -
Melica bulbosa Geyer ex Porter & J.M. Coult. MEBUoniongrass · Poaceae -
Melica spectabilis Scribn. MESPpurple oniongrass · Poaceae -
Melica subulata (Griseb.) Scribn. MESUAlaska oniongrass · Poaceae -
Melilotus officinalis (L.) Lam. MEOFsweetclover · Fabaceae -
Mentha arvensis L. MEAR4wild mint · Lamiaceae -
Mentzelia decapetala (Pursh ex Sims) Urb. & Gilg ex Gilg MEDE2tenpetal blazingstar · Loasaceae -
Menyanthes trifoliata L. METR3buckbean · Menyanthaceae -
Mikania scandens (L.) Willd. MISCclimbing hempvine · Asteraceae -
Mimulus guttatus DC. MIGUseep monkeyflower · Scrophulariaceae -
Mimulus primuloides Benth. MIPRprimrose monkeyflower · Scrophulariaceae -
Monarda fistulosa L. MOFIwild bergamot · Lamiaceae - Monarda fistulosa L. ssp. fistulosa var. menthifolia (Graham) Fernald MOFIM2mintleaf bergamot · Lamiaceae
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Morus rubra L. MORU2red mulberry · Moraceae -
Muhlenbergia cuspidata (Torr. ex Hook.) Rydb. MUCU3plains muhly · Poaceae -
Muhlenbergia frondosa (Poir.) Fernald MUFR2wirestem muhly · Poaceae -
Muhlenbergia glomerata (Willd.) Trin. MUGL3spiked muhly · Poaceae -
Muhlenbergia mexicana (L.) Trin. MUME2Mexican muhly · Poaceae -
Muhlenbergia montana (Nutt.) Hitchc. MUMOmountain muhly · Poaceae -
Muhlenbergia racemosa (Michx.) Britton, Sterns & Poggenb. MURAmarsh muhly · Poaceae