http://landscaping.about.com/od/landscapecolor/p/chrysanthemums.htm
Chrysanthemums can grow in zones 3 to 9.
Chrysanthemums need well drained soil. So clay is not good. Sand or Miracle Grow as long as the Miracle Grow does not retain water.
If planted early enough in the season for the roots to grow, chrysanthemums are perennials.
Chrysanthemums can be grown both in India and UK !!!
If you allow the roots to grow and mulch heavily, your chrysanthemum may overwinter.
Sugar water will often make a chrysanthemum or other flower open.
Chrysanthemums grow best when there is a lot of light available to them. They do best in fertile, sandy soil which should be well draining as they are susceptible to mildew.
The chrysanthemums that people buy at the florists or grocery store in fall and put out for their color will die with the frost. If you want chrysanthemums to grow the next year, you have to buy them earlier in the year and pinch off the flowers until after July 4th. Those will grow the next year.
Chrysanthemums are one of Egypts native Flowers, they once grew plentiful in the Nile valley. Currently they don't grow Quite as much. They're considered a high valued flower in the world in general though, they don't grow easy and color determines rarity
chrysanthemums have yellow and red
Chrysanthemums do not have thorns.
It is best to divide chrysanthemums in the spring.