Deno’s Garden

Gomphrena haageana

Genus Gomphrena

Protocol

DerivedN. 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
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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.