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About the plant What it is and where it grows — not part of any germination protocol.
Habit subshrub Plants of the World Online
Habit Perennial, Forb/herb PLANTS Database
Flower Red Wikipedia
Native range Mexico Northeast, Mexico Northwest, Mexico Southwest, New Mexico, Texas GBIF Backbone Taxonomy Toxicity is noted only where a source states it. No note here is not a finding of safety.
Sources: Plants of the World Online — Royal Botanic Gardens, Kew; PLANTS Database — USDA NRCS; Wikipedia — Wikipedia contributors; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.
Worth knowing The best-known cultivar of Rio Grande globe amaranth is 'Strawberry Fields', whose red flowers are reminiscent of strawberries. Wikipedia: Gomphrena haageana For a May 3 last frost, start this around March 21, 2027 — about 6 weeks ahead.
Using a national average last frost of May 3, which is wrong for most places. Put in your zip code for your own dates. Plant words explained .
Protocol N. C. Deno, 1993 Difficulty Low Rated by us, not by the source.
1 Sow and cover
Temperature: 95°F 35°C
No stated waiting before sowing. Then 15 days to germinate.
70% germination in 4–15 days.
Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Gomphrena p. 149Public domain Show the original text Gomphrena (Ameranthaceae). G. haageana germ best (91% in 2-4 d) in a regime of 90 daytime and 70 nightime temperatures. This supports a report from Ralph Cramer (a commercial grower of Gomphrena) that the seed germ. best if given 4 d at 100 and then shifted to 70. Germination was poorer at a constant temperature of 95(70% in 4-15 d) and even less at 70. The seed is enclosed in a papery husk which can be readily removed and experiments were conducted on both seed in the husk and seed with the husk removed. There was no essential difference although in a 70L experiment the seeds in the husk germ. faster which is attributed to a greenhouse effect with the husk trapping light and raising the effective T. A preliminary 3 m moist at 40 led to complete rotting of the seeds. Germination was not stimulated with GA-3 and such treatment was deterimental. Seed Germination Theory and Practice, 2nd ed., Ch. 20, Gomphrena p. 149. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list. How each step is done , in Deno’s words, and what Verified and Derived mean.
Germination trials Readers’ own records of sowing this species, published after review. Share your trial · All trials
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