Adonis: myrrh, corn, rose, fennel, lettuce, white heather
Aesculapius: bay, mustard
Ajax: delphinium
Anu: tamarisk
Apollo: leek, hyacinth, heliotrope, cornel, bay, frankincense, date palm, cypress
Attis: pine, almond
Ares: buttercup
Bacchus: grape, ivy, fig, beech, tamarisk
Baldur: St. John's wort, daisy
Bran: alder, all grains
Cupid: cypress, sugar, white violet, red rose
Dagda: oak
Dianus: fig
Dionysus: fig, apple, ivy, grape, pine, corn, pomegranate, toadstools, mushrooms, fennel, all wild and cultivated trees
Dis: cypress
Ea: cedar
Eros: red rose
Gwydion: ash
Helios: oak
Horus: horehound, lotus, persea
Hypnos: poppy
Jove: pine, cassia, houseleek, carnation, cypress
Jupiter: aloe, agrimony, sage, oak, mullein, acorn, beech, cypress, houseleek, date palm, violet, gorse, ox-eye daisy, vervain
Kernunnos: heliotrope, bay, sunflower, oak, orange
Kanaloa: banana
Mars: ash, aloe, dogwood, buttercup, witch grass, vervain
Mercury: cinnamon, mulberry, hazel, willow
Mithras: cypress, violet
Neptune: ash, bladderwrack, all seaweeds
Odin: mistletoe, elm, yew, oak
Osiris: acacia, grape, ivy, tamarisk, cedar, clover, date palm, all grains
Pan: fig, pine, reed, oak, fern, all meadow flowers
Pluto: cypress, mint, pomegranate
Poseidon: pine, ash, fig, bladderwrack, all seaweeds
Prometheus: fennel
Ra: acacia, frankincense, myrrh, olive
Saturn: fig, blackberry
Sylvanus: pine
Tammuz: wheat, pomegranate, all grains
Thoth: almond
Thor: thistle, houseleek, vervain, hazel, ash, birch, rowen, oak, pomegranate, burdock, beech
Uranus: ash
Woden: ash
Zeus: oak, olive, pine, aloe, parsley, sage, wheat, fig
Offerings to the God:
All fiery and airy herbs and flowers such as basil, chrysanthemum, snapdragon, clover, lavender, pine; strongly-scented, clean or citrusy herbs and flowers; those ruled by Mars or the Sun; yellow or red blooms such as sunflower, pine cones, seeds, cacti, thistles and stinging herbs; orange, heliotrope, cedar, and juniper.
~from Maat's Book of Shadows