such a fun question!!! i have many favorites… most, if not all, of these remind me of someone! ^_^ while we're here, retrospring crashed when i tried answering this... whoops!

1. baby’s breath: innocence, purity of heart
2. buttercup: sarcasm, ingratitude, childishness, riches, memories of childhood
3. carnations: ardent love, woman’s love
4. daffodil: unrequited love, evanescent happiness, deceitful hopes, self-love
5. daisy: loyal love, gentleness, innocence, purity, patient endurance
6. forget-me-not: true love, don’t forget me, faithful love, affectionate remembrance, light, truth
7. gardenia: secret love, joy, good luck, purity, sweet love, you’re lovely
8. hyacinth: grief, sorrow, please forgive me, unobtrusive loveliness, jealousy
9. hydrangea: thank you for understanding, heartfelt emotion/gratitude, a desire to deeply understand someone, apology, purity, grace
10. ivy: dependance, endurance, faithfulness, wedded love, affection, friendship

i have many favorite flowers… some more, though without symbolism:

jasmine, lavender, lilac, lily, lily of the valley, lotus, moonflower, morning glory, peony, periwinkle, peruvian lily, primrose, poppy, queen of the night, rainflower, mimosa pudica, spider lily, water lily, wisteria