Floriography is the 'language of flowers'. Dating back to the Victorian times floriography was used as a means of coded communication through various flowers and floral arrangements, allowing people to express feelings which otherwise could not be spoken.

Through the years people have used flowers to express their feelings to others in many ways and in modern times flowers still have various different meanings:

A:
Abor Vitae	Unchanging friendship
Acacia	Friendship, Beauty in retirement
Acacia (Rose or White)	Elegance, friendship
Acacia (yellow)	Secret love
Aconite	Beware
Agapanthus	Secret love
Agrimony	Thankfulness
Allium	Unity, Humility, Patience
Almond blossom	Hope
Alstroemeria	Devotion, Wealth, Prosperity, Fortune
Alyssum	Worth beyond beauty
Amaryllis	Pride, Timidity, Splendid beauty
Ambrosia	Your love is reciprocated
Anemone	Forsaken, Expectations
Apple Blossom	Better things to come, Good fortune
Arbutus	Thee only do i love
Arum	Ardour
Asparagus	Fern fascination
Asphodel	My regrets follow you to the grave
Aster	Symbol of Love, Daintiness
Aster (China)	Fidelity, Variety, I will think of thee
Azalea	Take care of yourself, Temperance, Fragile, Chinese symbol of womanhood

B:
Baby's Breath	Innocence, Pure of heart
Bachelor Button	Single blessedness, Hope
Balloon Flower	Endless love, honesty
Balm	Sympathy
Balsam	Ardent Love
Barberry	Bad temper
Begonia	A fanciful nature
Bells of Ireland	Good luck
Bird of Paradise	Symbol of faithfulness
Bittersweet	Truth
Black Bryont/Lady's Seal	Be my support
Bluebell	Humility, Constancy
Bouvardia	Enthusiasm
Broom	Humility, Neatness
Buck Bean	Calm repose
Burdock	Touch me not
Buttercup	Childishness

C:
Cactus	Endurance
Caladium	Great joy and delight
Calendula	Considered sacred
Calla Lily	Magnificent beauty
Calycanthus	Benevolence
Canterbury Bell	Gratitude
Camellia (General)	Gratitude, Perfection
Camellia (Red)	Unpretending excellence, You're a flame in my heart
Camellia (White)	You're adorable, Perfected loveliness
Camellia (Pink)	Longing for you
Candy-Tuff	Indifference
Cardinal Flower	Distinction
Catchfly (Red)	Youthful Love, I fall victim
Cattleya	Mature charms
Carnation (General)	Fascination, Woman love
Carnation (Red)	Alas poor heart, Admiration
Carnation (White)	Sweet, Lovely, Innocence, Pure love, Adoration
Carnation (Pink)	I'll never forget you
Carnation (Purple)	Capriciousness
Carnation (Solid Colour)	Yes
Carnation (Striped)	No, Refusal, Sorry I can't be with you
Carnation (Yellow)	Disappointment, Rejection
Cattail	Peace, Prosperity
Cedar	I live but for thee, Think of me
Celandine	Future joy
Chamomile	Energy in action
Cherry Blossom (Single)	Education
Chickweed	I cling to thee
Chicory	Frugality
China-Aster	Variety
Christmas Rose	Relieve my anxiety
Chrysanthemum (General)	You're a wonderful friend, Rest, Cheerfulness
Chrysanthemum (Red)	I love you
Chrysanthemum (White)	Truth
Chrysanthemum (Yellow)	Slighted love
Cinquefoil	Beloved child
Clematis	Artifice (ingenuity)
Clover (Four Leaf)	Be mine
Clover (Red)	Industry
Clover (White)	Think of me
Colchicum	My best days fled
Columbine (Red)	Anxious
Columbine (White)	Folly
Columbine (Purple)	Resolved to win
Compass Flower	Faith
Corchorus	Impatience of happiness
Coreopsios	Always cheerful
Cornflower	Delicacy, Refinement
Coronilla	Success to you
Cowslip	Rusticity, Winning grace, Healing, Youth, Pensiveness
Coxcomb	Foppery, Unfading love
Crocus	Youthful gladness, Cheerfulness
Crown	Imperial Majesty
Cyclamen	Resignation, Good-bye

D:
Daffodil	Regard, Unrequited love, Respect
Dahlia	Dignity and Elegance
Daisy	Loyal Love, Gentleness, Innocence
Dandelion	Faithfulness, Happiness, Love's oracle
Dead leaves	Sadness
Deadly Nightshade	Falsehood
Delphinium	Flight of fancy
Dill	Lust
Diosma	Your simple elegance charms me
Dog Rose	Pleasure and pain
Dogwood	Durability
Dogwood (Flowering)	Am I indifferent to you?
Dracaena	Inner power
Dragon Root	Ardour

E:
Edelweiss	Daring, Courage, Noble purity
Eglantine	Poetry, I wound to heal
Elder Flower	Zeal
Endine	Frugality
Epigaea (Mayflower)	Budding
Eremurus	Endurance
Eupatorium	Delay
Euphorbia	Persistence
Everlasting	Never ceasing memory

F:
Fern	Fascination, Sincerity, Magic
Fern (Maidenhair)	Secret bond of love, Discretion
Fern (Royal)	Reverie
Filbert	Reconciliation
Fir	Time
Flax	Domestic symbol
Fleur De Lis	Flame, Burning
Flora's Bell	Without Pretension
Flowering Almond	Hope
Flowering Reed	Confide in heaven
Forget Me Not	True love, Faithfulness, Remembrance
Forsythia	Anticipation, Innocence
Foxglove	Stateliness, Youth
Foxtail Grass	Sporting
Freesia	Innocence, Trust, Friendship
Fuchsia (Scarlet)	Confiding love, Taste
Furze	Love for all occasions

G:
Galax	Encouragement
Gardenia	Purity, Sweet love, You're lovely
Gentian (Fringed)	Intrinsic worth, I Look to heaven, Autumn
Gentian (Closed)	Sweet be thy dreams
Geranium	Stupidity, Folly
Geranium (Apple)	Present preference
Geranium (Ivy)	Your hand for the next dance
Geranium (Lemon)	Unexpected meeting
Geranium (Nutmeg)	I expect a meeting
Geranium (Oak-Leaved)	True friendship, Lady
Geranium (Pencilled)	Ingenuity
Geranium (Rose)	Preference
Geranium (Scarlet)	Consolation
Geranium (Silver-Leaf)	Recall
Gerbera	Innocence
Gladioli	I'm really sincere, Flower of the Gladiators
Gladiolus	Strength of character, Generosity
Globe (Amaranth)	Unfading Love
Gloxinia	Love at first sight
Golden-Rod	Be cautious
Gooseberry	Anticipation
Goosefoot	Goodness
Gorse	Endearing affection
Grass	Submission
Gypsophila	Fertility

H:
Harebell	Humility, Grief
Hawthorn	Hope
Heartese pansy	Think of me
Hearts Easr	You occupy my thoughts
Heather	Good luck
Heather (White)	Protection, Wishes will come true
Heather (Lavender)	Admiration, Solitude
Heliotrope	Devotion, Faithfulness
Hellebore	Scandal
Henbane	For males to attract love from females
Hibiscus	Delicate beauty
Holly	Domestic Happiness, Defence, Foresight
Hollyhock	Fruitfulness
Hollyhock (White)	Female ambition
Honey Flower	Secret Love, Sweet
Honeysuckle	Generosity
Honeysuckle (Coral)	I Love You
Hoya (Wax Plant)	Sculpture
Huckleberry	Faith, Simple pleasures
Hyacinth	Playful, Loveliness
Hyacinth (White)	Unobtrusive loveliness
Hyacinth (Red Or Pink)	Playful
Hyacinth (Blue)	Constancy
Hyacinth (Purple)	Sorrow, Please forgive me
Hyacinth (Yellow)	Jealousy
Hydrangea	Thank you for understanding, Boastfulness, Heartlessness

I:
Indian Cress	Resignation
Ipomaca	I attach myself to you
Iris	Faith, Valour, Wisdom, Friendship
Iris (Yellow)	Passion
Iris (German)	Flame
Ivy	Fidelity, Wedded Love, Affection, Friendship

J:
Japonica	Loveliness
Jasmine (White)	Amiability
Jasmine (Yellow)	Modesty, Grace, Elegance
Jasmine (Indian)	Attachment
Jasmine (Spanish)	Sensuality
Jerusalem Oak	Your love is reciprocated
Jonquil	Affection returned, Desire, Love me
Juniper	Protection

K:
Kennedia	Intellectual beauty
King's Cup	I wish I were rich

L:
Lady's Slipper	Win me
Larkspur	An open heart
Larkspur (Pink)	Fickleness
Lavender	Loyalty, Love, Devotion
Lemon Leaves	Everlasting love
Lemon Blossom	Fidelity in love
Lilac (White)	Youthful innocence, Purity
Lilac (Purple)	First emotion of love
Lily of the Valley	Return of happiness, Humility
Lily (Orange)	Wealth
Lily (White)	Sweetness, Purity
Lily (Yellow)	I'm walking on air, Gaiety
Lily (Calla)	Beauty
Lily (Day)	Coquetry
Lily (Eucharis)	Maiden charms
Lily (Tiger)	Wealth, Pride
Linden Tree	Matrimony
Liverwort	Confidence
Longi Lily	Pure, Modest
Lotus Flower	Estranged love
Love In a Mist	You puzzle me
Lucerne	Life
Lungwort	Thou art my life
Lupine	Imagination

M:
Magnolia	Love of nature, Nobility
Maidenhair	Discretion
Mallow	Sweet disposition
Marigold	Grief, Despair, Jealousy
Marigold (Common)	Pretty love, Sacred, Affection, Caress, Sorrow
Marjoram	Joy, Happiness
Meadow Saffron	My best days are past
Mezereon	Desire to please
Mignonette	Your qualities surpass your charms, Health
Milk Vetch	Your presence softens my pain
Mimosa	Sensitivity
Mint	Virtue
Mistletoe	Kiss me, Affection, Difficulties
Monkshood	Beware, A deadly foe is near
Morning Glory	Affection
Moss	Maternal love, Charity
Motherwort	Secret Love
Mullein	Good nature
Mum	Hope
Myrtle	Love, Home, Duty

N:
Narcissus	Egotism, Formality
Nasturtium	Patriotism, Conquest, Victory in battle

O:
Oleander	Caution
Olive Branch	Peace
Orange Blossom	Innocence, Purity, Eternal love, Marriage
Orange Mock	Deceit
Orchid	Love, Beauty
Orchid (Cattleya)	Mature charm

P:
Palm Leaves	Victory, Success
Pansy	Thoughtful reflection, Merriment
Parsley	Useful knowledge
Pasque Flower	Unpretentious, You have no claims
Passion Flower	Faith
Peach Blossom	I am your captive
Pear Blossom	Affection
Peony	Happy marriage, Prosperity, Bashfulness
Petunia	Resentment, Anger, Your presence soothes me
Phlox	Our souls are united
Pimpernel	Change
Pine	Hope, Pity
Pink	Pure affection
Pink (Mountain)	You are aspiring
Poinsettia	Be of good cheer
Pomegranate Flower	Elegance
Poppy (General)	Eternal sleep, Oblivion, Imagination
Poppy (Red)	Pleasure
Poppy (White)	Consolation
Poppy (Yellow)	Wealth, Success
Pride Of China	Dissension
Primrose	I can't live without you
Primrose (Red)	Un patronized merit
Primrose (Evening)	Inconstancy
Prince's Feather	Unfading love
Pussy Willow	Motherhood

Q:
Quaking Grass	Agitation
Queen Anne's Lace	Haven

R:
Ragged-Robin	Wit
Ranunculus	Radiant, Charming
Rhubarb	Advice
Rhododendron	Danger, Beware, I am dangerous
Rose (Red)	Love, I love you, Desire
Rose (Single red)	I Love You
Rose (White)	Charm, Innocence
Rose (White and Red)	Unity
Rose (Pink)	Perfect happiness
Rose (Pale Pink)	Grace
Rose (Dark Pink)	Thankfulness
Rose (Burgundy)	Unconscious beauty
Rose (Coral)	Desire
Rose (Dark Crimson)	Mourning
Rose (Orange)	Fascination
Rose (Peach)	Immortality, Modesty
Rose (White-Dried)	Death is preferable to loss of virtue
Rose (Yellow)	Friendship, Joy, Gladness
Rose (Bridal)	Happiness
Rose (Christmas)	Relieve my anxiety
Rose (Damask)	Freshness, Persian ambassador of love
Rose (Dog)	Pleasure, Pain
Rose (Hibiscus)	Delicate, Beauty
Rose (Lavender)	Enchantment
Rose (Leaf)	You may hope
Rose (Musk Cluster)	Charming
Rose (Tea)	I'll remember always
Rose (Thornless)	Love at first sight
Rose-Of-Sharon	Consumed by love
Rosebud	Beauty, Youth
Rosebud (Red)	Pure, Lovely
Rosebud (White)	Girlhood
Rosebud (Moss)	Confessions of love
Roses (Assorted Colours)	You're everything to me
Roses (Single Full Bloom)	I Love You, I still love you
Roses (Bouquet Mature Blooms)	Gratitude
Roses (Garland or Crown of)	Beware of virtue, Reward of merit, Symbol of superior merit
Rosemary	Remembrance
Rush	Docility

S:
Satin-Flower	Sincerity
Scarlet Ipomoea	Attachment
Sensitive Plant	Timidity
Shamrock	Light heartedness
Sloe	Difficulty
Smilax	Loveliness
Snapdragon	Presumption, Deception, Gracious lady
Snowball	Thoughts of heaven
Snowdrop	Hope
Solidago	Success
Spanish  Jasmine	Sensuality
Spearmint	Warm sentiment
Spider Flower	Elope with me
Star of Bethlehem	Atonement, Reconciliation
Starwort	Welcome to a Stranger
Statice	Remembrance
Stephanotis	Marital happiness
Stock	Affection, Lasting beauty, You'll always be beautiful to me
Stonecrop	Tranquillity
Straw Flower	Agreement
Straw (Broken)	Broken agreement
Sunflower (Tall)	False riches, Pride
Sunflower (Dwarf)	Adoration, Pride
Sweet Pea	Blissful pleasure, Good-bye, Departure
Sweet-Sultan	Felicity, Happiness
Sweet William	Grant me one smile

T:
Thornapple	I dreamed of thee
Thrift (Armeria)	Sympathy
Tiger Lily	Prosperity
Traveller's Joy	Rest, Safety
Trumpet Flower	Separation
Tuberose	Dangerous Pleasure
Tulip	Love and Passion
Tulip (Red)	Declaration of love
Tulip (White)	I am worthy of you
Tulip (Variegated)	Beautiful eyes
Tulip (Yellow)	There's sunshine in your smile

V:
Venus Flytrap	Caught at last
Verbena	Pray for me
Veronica	Fidelity
Vervain	Enchantment
Vine	Intoxicating
Violet	Faithfulness, Modesty
Violet (Blue)	Watchfulness, Faithfulness, I'll always be true
Violet (White)	Let's take a chance
Viscaria	Will you dance with me?

W:
Wallflower	Fidelity in adversity
Water Lily	Purity of heart
Wax Flower	Riches
Windflower	Sincerity, Symbol of love
Wintergreens	Harmony
Wisteria	Welcome
Witch Hazel	A spell
Wolfbane	Misanthropy, Chivalry, Knight
Woodbine	Fraternal love
Wormwood	Absence, Do not be discouraged

Y:
Yarrow	Healing
Yew	Sorrow

Z:
Zephyr Flower	Sincerity, Symbol of love
Zinnia	Thoughts of an absent friend
Zinnia (Yellow)	Daily remembrance
Zinnia (Magenta)	Lasting affection
Zinnia (Mixed)	Thinking / In memory of an absent friend
Zinnia (Scarlet)	Constancy
Zinnia (White)	Goodness