Deno’s Garden

Petalonyx nitidus

Genus Petalonyx

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around October 5, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: dark

about 6 months from start to sowing. Then 2 days to germinate.

57% germination in 2 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Petalonyx p. 65Public domain
Show the original text
Petalonyx (Loasaceae). P. nitidus germ. 40-70D(4/7 on 2nd d), 70D{1/5 in 4th w), and none in 70L or 40.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Petalonyx p. 65. 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.

Protocol 2

DerivedN. C. Deno, 1996

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing.

0% germination.

Nothing germinated at 70.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Petalonyx p. 65Public domain
Show the original text
Petalonyx (Loasaceae). P. nitidus germ. 40-70D(4/7 on 2nd d), 70D{1/5 in 4th w), and none in 70L or 40.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Petalonyx p. 65. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.