Canada's Plant Hardiness Site

Data have been entered for 7138 species.

(Last updated Wed Jan 14 11:46:39 EST 2015)
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Ulmus alata winged elm
Ulmus americana white elm
Ulmus crassifolia cedar elm
Ulmus davidiana David elm
Ulmus davidiana var. japonica jacan elm (var. jacan)
Ulmus glabra Scotch elm
Ulmus minor field elm
Ulmus parvifolia Chinese elm
Ulmus procera English cork elm
Ulmus pumila dwarf elm
Ulmus rubra red elm
Ulmus serotina red elm
Ulmus thomasii cork elm
Urtica dioica stinging nettle
Urtica dioica subsp. dioica European stinging nettle
Urtica dioica subsp. gracilis slim stinging nettle
Urtica urens burning nettle
Utricularia cornuta horned bladderwort
Utricularia geminiscapa hiddenfruit bladderwort
Utricularia gibba creeping bladderwort
Utricularia intermedia flatleaf bladderwort
Utricularia minor lesser bladderwort
Utricularia ochroleuca dwarf bladderwort
Utricularia purpurea purple bladderwort
Utricularia radiata
Utricularia resupinata resupinate or inverted bladderwort
Utricularia subulata
Utricularia vulgaris
Utricularia vulgaris subsp. macrorhiza zigzag bladderwort
Uvularia grandiflora largeflower bellwort
Uvularia perfoliata perfoliate bellwort
Uvularia sessilifolia sessileleaf bellwort