Lilac (purple) - first emotion of love
Lilac (white) - youthful innocence
Lily (white) - Purity
Lily (scarlet) - High-souled aspirations
Lime Blossom - Fornication
Lobelia - Malevolence
Lotus - Eloquence
Love lies bleeding - Hopelessness
Magnolia - Love of nature
Mallow - Consumed by love
Marigold - Pain and grief
Mayflower - Welcome
Mignonette - Worth
Mint - Suspicion
Morning glory - Love In Vain
Mullein - Good-nature
Nasturtium - Patriotism
Oak leaf - Strength
Oats - Music
Olive - Peace
Oxeye daisy - Patience
Pear blossom - Lasting friendship
Pitch pine blossom - Philosophy
Poppy (general) - Eternal sleep, oblivion, imagination
Poppy (red) - Pleasure
Poppy (white) - Consolation
Poppy (yellow) - Wealth, success
Rose (red) - True love
Rose (blue) - Mystery, attaining the impossible
Rose (white) - Silence or innocence, wistfulness, virtue, purity, secrecy, reverence and humility
Rose (black) - Death, hatred, farewell, rejuvenation or rebirth
Rose (yellow) - Friendship, or dying love (or platonic love) or jealousy, infidelity
Rose (pink) - Grace
Rose (dark pink) - Gratitude
Rose (light pink) - Desire, passion, joy of life, youth, energy
Rose (burgundy) - Beauty
Rose (coral or orange) - Desire, passion
Rose ((lavender (violet)) - Love at first sight
Rose (red and white together) - Unity
Rose (red and yellow together) - Joy, happiness, and excitement
Rose (thornless) - Love at first sight
Rosemary - Remembrance
Rue - Regret
Sensitive Plant - Sensitivity
Snowdrop - Consolation or hope
Star of Bethlehem - Hope
Straw - United
Sunflower - Pure and lofty thoughts
Sweetbrier - Simplicity
Thorn-apple - Disguise
Thistle - Nobility
Thyme - Thriftiness
Tulip-tree - Fame
Tulip (red) - Declaration of love
Tulip (yellow) - Hopeless love
Violet (blue) - Faithfulness
Violet (white) - Modesty
Willow (creeping) - Love forsaken
Winged seeds (any kind) - Messengers
Witch-hazel - A spell
Wheat - Wealth and prosperity
Thank you Wikipedia
