Sagittarius
Flowers and herbs: carnation, wallflower, clove-pink, sage
Trees: mulberry, vine, chestnut

Capricorn
Flowers and herbs: nightshade, rue, snowdrop, Solomon’s seal
Trees: pine, cypress, yew, spruce, holly

Aquarius
Flowers and herbs: snowdrop, foxglove, mullein (torch flower), gentain, great valerian
Tree: pine

Pisces
Flowers and herbs: heliotrope, carnation, opium poppy, violet

Aries
Flowers and herbs: thistle, wild rose, gorse, nasturtium, woodbine, wake-robin
Trees: holly, thorn, chestnut

Taurus
Flowers and herbs: lily of the valley, violet, wild rose, myrtle-blossom, coltsfoot
Trees: almond, apple, walnut, ash, sycamore, cherry, myrtle

Gemini
Flowers and herbs: parsley, dill, snapdragon, fern, iris
Trees: elder, filbert, hazel

Cancer
Flowers and herbs: poppy, water lily, white rose, watercress, honesty, Moonwort, privet
Trees: willow, sycamore

Leo
Flowers and herbs: marigold, sunflower, cowslip, heliotrope, forsythia, hops, peony
Trees: palm, laurel, pine, oak

Virgo
Flowers and herbs: rosemary, Madonna lily, cornflower, valerian
Trees: hazel, elder

Libra
Flowers and herbs: violet, white rose, love-in-a-mist
Trees: almond, walnut, plum, myrtle, apple (apple blossom falls especially under the dominion of Libra)

Scorpio
Flowers and herbs: sweet basil, lesser celandine, purple heather, Chrysanthemum
Trees: holly, blackthorn, white horn

From Garden Spells by Claire Nahmad