Deno’s Garden

Thomasia quercifolia

Genus Thomasia

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Moderate Rated by us, not by the source.

Start around September 17, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 16, 2026.

  1. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 6 months from start to sowing. Germination time not stated; 21 days assumed.

36% germination.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Thomasia p. 65Public domain
Show the original text
Thomasia (Sterculiaceae). T. quercifolia seeds severahyears old germ. 70D(2% in 7th w)-40(20% in 4th w) and 70L-40(36% in Bth w). The seeds largely ' rotted in 70 GA-3 or 40.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Thomasia 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, 1998

Difficulty High Rated by us, not by the source.

Start around September 10, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 9, 2026.

  1. Warm moist stratification

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

    2 germinated in this phase.

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 6 months from start to sowing. Then 28 days to germinate.

20% germination in 28 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Thomasia p. 65Public domain
Show the original text
Thomasia (Sterculiaceae). T. quercifolia seeds severahyears old germ. 70D(2% in 7th w)-40(20% in 4th w) and 70L-40(36% in Bth w). The seeds largely ' rotted in 70 GA-3 or 40.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Thomasia 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.