The Chrysanthemum bloom is symbolic to Autumn and is frequently referred to as the flower of the 9th moon, she is native to China and Eastern Europe and has a rich history dating back to the 15 century BC.
“Kiku” Japanese for Chrysanthemum is the national flower of Japan, references of this flower goes back to the 8th century AD. The flower plays a significant role in Japan’s culture and one realizes this when Japan’s National Chrysanthemum Day is also called the Festival of Happiness. Besides, a single blooming Chrysanthemum has been adopted by Japan as the crest and official seal of the Emperor. 
According to the world of Chinese The Chrysanthemum(菊花) signifies intellectual accomplishments, cleansing qualities, and longevity of life. Buddhists use this flower as offerings on altars because they symbolizes powerful Yang energy.
The flower attracts good luck in the home and is often given to old people since Chrysanthemums symbolize a strong and long life because of its health-giving properties. During the Han dynasty (206 BC- AD 220), people drank chrysanthemum wine on the ninth day of the ninth lunar month in order to prolong their lives.
Uses:
Cut-flower
As a cut flower Chrysanthemums are hard to beat. The cut flower Chrysanthemum features 13 different classes of flower types, they come in a wide array of colors: white, yellow, green, orange, pink, red and purple flowers and are grown on long, strong stems. These assets as well as their exceptionally long vase life of approx. 2 weeks make it an ideal cut flower and re especially appreciated in the use of corporate arrangements that have to last for a week at least in the sometimes less than ideal office climates.
Chrysanthemums are frequently used in funeral work. In China Japan and Korea, white or yellow chrysanthemums symbolize grief. In many European countries such as Hungary, Poland, Croatia, France, Spain and Italy white Chrysanthemums are symbolic of death and are only used for funerals and grave sites. However the more colorful Chrysanthemums are used for many other occasions as well.
In US white Chrysanthemum symbolize truth.
Condition Chrysanthemum stems by removing all discolored and damaged foliage as well as all the foliage that will be under water, clean stems under a stream of water, removing about 1-2 inches of the stem by giving it a slanted cut with a sharp knife and place in lukewarm water with floral preservative for about 2 hours. 
To grow these non hardy florist Chrysanthemums will require lots of care and disbudding the lateral buds.
For more information here is a link
Garden beds
Chrysanthemums are an obvious choice for late summer and fall garden colors. The easy to grow hardy mums are readily available from garden center and can be planted any time as long as the roots have a chance to get acclimated before being placed under too much stress due to extreme heat or cold. So approx. one and a half months or so before frost or extreme heath is a good rule of thumb. Hardy Chrysanthemums can be propagated by dividing, by plant cuttings or by seed.
Chrysanthemum can be grown in full sun or part shade, give them at least 4 hours of sun and make sure they are not crowded as Mildew can be a problem.
for more information here is a link
or this link
Medicinal
Chrysanthemum medicinal use goes back to the beginning of it’s history when it was grown as an herb in it’s native China. It’s medicinal properties are called on to relief inflammatory conditions such as fever, hypertension, head aches, colds and eye infections and more.
Prepared as a tea made from the dried flower petals of white or yellow Chrysanthemums, Many people drink the beverage because of it’s cleansing qualities.
for more information click here
or this article by Jane Berdot
Herbal
Julie Day from “Today’s Homeowner” question forum wrote the following on edibility.
Chrysanthemum flowers are edible, but the flavor varies widely from plant to plant, from sweet to tangy to bitter or peppery.
- Chrysanthemum Tea: Traditional Asian chrysanthemum tea is typically made from the yellow or white flowers of Chrysanthemum morifolium or Chrysanthemum indicum..
- Chrysanthemum Greens: Garland Chrysanthemum, or Chrysanthemum coronarium is a traditional Japanese vegetable, also known as Shungiku, it has a mild flavor that lends itself well to stir-fries and chop suey. Since you can use both the flowers and the greens of Garland chrysanthemum, it’s the most popular “edible” chrysanthemum for home gardens.
- Salads, Garnishes, and Stir-Fries: Any type of chrysanthemum flowers can be blanched, then the petals removed and added to your favorite dish. This is easiest with large petaled varieties of mums. Use only the petals, since the flower base is usually very bitter.
Chrysanthemum Wine: You can also make wine from chrysanthemum flowers. Again, traditionally yellow or white blossoms are used.
http://winemaking.jackkeller.net/request176.asp
Cautions: Pyrethrum, a plant based insecticide, is made from the dried flowers of Chrysanthemum cinerariaefolium or Chrysanthemum coccineum. Although it takes a pretty high concentration of flowers to make pyrethrum, I would still avoid planting these types of mums in an edible garden.
