The Ammi plants are grow up to 90 centimeters in length.
They are annuals or biennials depending on the species.
The flowers appear towards the end of spring and sometimes in autumn as well.
The Ammi plant belongs to the carrot family. Other names for Ammi flowers are “Bishop’s Weed” and “Queen Anne’s Lace”, “Large Bullwort”, “Laceflower”, “Greater Ammi” and “Toothpick Weed”.
Ammi belongs to a genus which has six members: Fennel, Hemlock, Anise, Dill and Carrots.
Ammi flowers are not edible but do not have any medicinal value either, although some research is being done to investigate the possibility of these flowers helping to combat cancer.
They are not invasive like a weed and do not come under the category of endangered species.
These flowers are available all the year round and the cut flowers last for about a week.
This flower is sometimes seen as part of an elaborate flower arrangement but it is actually more suitable for use in horticultural landscaping.
They are also a popular choice as part of a dry arrangement of flowers.
Some people can develop allergies to these flowers manifested in painful skin rashes, so in such a case it would be advisable to avoid physical contact with the plants or flowers.
Source: http://www.altiusdirectory.com/Shopping/flower-facts/Ammi-flowers-7