We all know that flowers have a language all their own.
And there is no better way to express one's feelings then by giving fresh flowers.

Roses - success in love

White Roses means "You're Heavenly"
Red Rose means "I Love You", romantic love
Red and white roses together means "Unity"
Yellow Roses means "Jealously"
Peach Rose symbolizes modesty
Pink Roses means "Perfect Happiness" or "Please Believe Me"
Thornless Roses means " Love At First Sight"

Carnations - admiration, deep love and affection

Red Carnation means "My heart aches for you"
Purple Carnation means "Capriciousness"
White Camellia means "You're Adorable"
Pink Carnation means "I'll never forget you"

Lily symbolizes majesty

Orange Lily means "Hatred".
Yellow Lily means "I'm walking on Air"
White Lily means "It's heavenly To Be With You"

Others

Clover - a happy marriage, wealth & prosperity
Blue Hyacinth means "Consistency"
Yellow Hyacinth means "Jealousy"
Iris symbolizes warm affection
Orange or lemon blossom means "Eternal Love", also purity and virginity
Pink Camellia means "Longing For You"
Red Camellia means "You're A Flame In My Heart"
Jasmine symbolizes amiability
Pine means "Hope"
Red Poppy means "Pleasure"
Hydrangea symbolizes boastfulness.
White Poppy means "Consolation"
Yellow Poppy means "Wealth"
Magnolia symbolizes perservance
Red Tulip means "There's Sunshine In Your Smile"
Blue Tulip means "I'll Always Be True"