Taste: Fuschia.
Temperance: Azalea.
Temptation: Quince.
Thank you: Parsley, Dark Pink Rose, Sweet Pea.
Thank you for understanding: Hydrangea.
Thee only do I love: Arbutus.
Thoughtfulness: Freesia, Pansy, Sweet Pea, Purple Violet.
Time: Fir, Poplar.
Truth: Bittersweet, Chrysanthemum, Nightshade, White Rose.
Unanimity: Phlox, Red and White Roses.
Union: Whole Straw.
Valor: Iris.
Variety: Aster.
Victory: Nasturtium, Palm Leaves.
Virginity: White Lily.
Virtue: Mint, White Rose, Sage.
Warmth: Cactus, Ginger, Mint, Peppermint, Spearmint.
Watchfulness: Blue Violet.
Wealth: Alstromeria, Lily, Yellow Poppy.
Welcome home husband however drunk you are: Hen-and-chickens.
Whimsy: Bells of Ireland.
Widowhood: Scabious.
Win me: Lady's Slipper.
Wisdom: Columbine, Iris, Mulberry Tree.
Wishes will come true: White Heather, Sweet Basil.
Wit: Sorrel.
Womanhood: Azalea, Carnation.
Worth beyond beauty: Alyssum.
Yes: Carnation.
You're adorable: Camellia, white.
You're the only one: Daffodil.
Youthful: Lilac, Small Rose Bed, White Violet.
You've made my life complete: Lily of the Valley.
Zealousness: Elder, Elderberry.
Zest: Salal.
Sources:
Crowell, Robert L. The Lore & Legends of Flowers, 1982.
Greenaway, Kate. Kate Greenaway's Language of Flowers, 1978.
Laufer, Geraldine Adamich. Tussie-Mussies: The Victorian Art of Expressing Yourself in the Language of Flowers, 1993.
Loewer, Peter. Loves Me, Loves Me Not: The Hidden Language of Flowers, 2006.
