What they mean.....

Anemone.........Sincerity
Carnation.......Joy
Crocus..........Gladness
Daffodil........Respect
Daisy...........Innocence
Fern............Grace
Freesia.........Trust
Heather.........Admiration
Huckleberry.....Faith
Iris............Promise
Lilac...........Beauty
Lily............Devotion
Mum.............Hope
Orchid..........Thoughtfulness
Pansy...........Merriment
Peony...........Compassion
Red Rose........Passion
Rose............Love
Snapdragons.....Pride
Tiger Lily......Prosperity
Tulip...........Luck
Violet..........Virtue
Wintergreens....Harmony
Wisteria........Welcome
Yellow Lily.....Gratitude

By the month......

January..........Carnation
February.........Violet
March............Jonquil
April............Sweetpea
May..............Lily of the Valley
June.............Rose
July.............Larkspur
August...........Gladiolus
September........Aster
October..........Calendula
November.........Chrysanthemum
December.........Narcissus