Deno’s Garden

Heuchera cylindrica

Genus Heuchera

Protocol

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

  1. Sow and cover

    Temperature: 70°F 21°C Light: either

No stated waiting before sowing. Then 28 days to germinate.

30% germination in 14–28 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Heuchera p. 152Public domain
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Heuchera (Saxlfragaceae). The small seeds cannot be readily separated from the capsules and chaff so that seed counts are inaccurate. H, cylindrica germ. 70D(5% in 3rd w), 70L(13% in 3rd w), 40(4%)-70, and 40% in April in outdoor treatment. These behaviors contrast sharply with the behaviors of seeds that had been DS for 2 y. These germ. 70L(43% in 3rd w), .70D GA-3(31% in 2- 4 w), and 700(none). The GA-3 seedlings were normal. H. cylindrica v. alpina germ. 70(30-40% in 2-4 w) and 40-70(none). Light had no effect. In view of the results with H. cylindrica, outdoor treatment might have given even higher germination. Note that in both species, a prior 3 m at 40 was deleterious. Seeds DS for 2 y was dead.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Heuchera p. 152. 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.