Common Name Ammi green mist, toothpick weed, Khella, Bishop's flower 
Genus  Visnaga
Species V. daucoides
Family Apiaceae
Life Cycle  Hardy Annual 
Tray Size  210
Plug Care Harden off and plant out or bump up soon after receiving. Being in the carrot family, Ammi has a tap root and does not like to get rootbound. Transplant carefully to avoid excessive root disturbance, and keep moist until plants acclimate to their new bed. 
Netting / Staking One or two layers of netting will help keep stems straight,  especially in windy areas. 
Temperature Range Young plants can handle frost and only need protection  during a deep freeze. Good candidate for most climate zones.  
Spacing 8-10"
Soil Preference Loose, well draining soil of average fertility and neutral  pH. Excess nutrients (especially nitrogen) will cause the overproduction of foliage and few flowers. Once established, Ammi is quite drought tolerant. 
Day Length Long day plants - will flower from early summer through to frost. Plant in full sun. 
Pinching Not necessary 
When to Plant This hardy annual can take frost at transplant stage, and prefers a cool period to establish roots before flowering. Plant a few weeks before last frost, even in the field. In warmer zone, try planting in the fall and overwintering for even earlier flowers the following year. This is a good candidate for succession sowing - 2 or 3 plantings spaced a couple weeks apart to prolong the blooming window. 
Harvesting Expect the first flowers 80-90 days after transplanting;  this is dependent on weather and temperature.  Sunshine and warmth accelerate growth. Harvest when nearly all the flowers on the inflorescence are open; cutting early risks wilting and cutting late risks pollen shed and short vase life. 
Post Harvest Care Expect a vase life in between 1 and 2 weeks. Use a floral preservative to extend the vase life and avoid exposure to ethylene gas. 
Diseases / Insects Quite hardy and disease/insect resistant.  
Bailey's Notes

Currently in our catalog we offer Green Mist Ammi (V.  daucoides), but we may offer Common Ammi (A. majus)  in the future. Care of both species is the same.

Some growers and consumers report that the flowers of   . daucoides have an unpleasant odor  - this can likely be said for any plant in the carrot family.  

If left to go to seed in the field it can self-sow for subsequent harvests. 

Resources NA