Common Name Gomphrena, Gomphrena Globosa, Globe Amaranth
Genus  Gomphrena 
Species G. globosa 
Family Amaranthaceae
Life Cycle  Tender Annual 
Tray Size  210
Plug Care Harden off and plant out or bump up into larger cells soon after arrival to avoid plugs becoming stressed rootbound. Stressed plugs may flower prematurely. 
Netting / Staking Not necessary.
Temperature Range Gomphrena does not tolerate frost, and loves the heat. Can be grown successfully as an annual in most zones. 
Spacing 8-12"
Soil Preference Average, loose, well drained soil. Excessive fertility will cause, soft, weak growth. When established is fairly drought tolerant but prefers regular moisture. 
Day Length Long-day plant. Requires full sun. 
Pinching Not necessary. 
When to Plant Plant in the spring after all threat of frost has passed - Gomphrena does not tolerate frost or cold conditions. The soil should be at least 50F at time of transplanting. This is a good candidate for succession sowing to have flowers reliably until frost. An additional planting about 4 weeks after the initial planting should be sufficient. 
Harvesting Expect the first flowers approximately 80-100 days from the point of transplant - this is highly variable due to temperature and weather conditions. Harvest when flowers are colored up but before they are fully open.
Post Harvest Care Use fresh or dried. To dry simply hang in a warm, well ventilated area. Cut stems to be used fresh should immediately be placed in cool water, with or without a preservative. Expect a vase life of just over a week. 
Diseases / Insects Generally disease and pest resistant, but can be affected by the common plant pests (aphids, thrips, spider mites). Prolong periods of cool, damp weather may encourage the development of powdery mildew or fungal leaf spot.  
Bailey's Notes These plants are very prolific and will continue to pump out the stems. Definitely cut and dry bunches for use in other seasons if you feel like you're drowning in gomphrena flowers late summer. 
Resources NA