Deno’s Garden

Psychotria nervosa

Genus Psychotria

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Low Rated by us, not by the source.

Start around October 26, 2026 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 161 days to germinate.

86% germination in 42–161 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Psychotria p. 56Public domain
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Psychotria (Rubiaceae). P. nervosa had germ. 70D(6/7 in 6-23 w) and 40- 70D(3/6 in 5-12 w)(1st Suppl.). Seeds DS 1 y germ. 70D{2/7 in 8th w). Seeds DS 2 y failed to germinate in 70D after 4 m and appear dead.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Psychotria p. 56. 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 Moderate Rated by us, not by the source.

Start around July 16, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 15, 2026.

  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 84 days to germinate.

50% germination in 35–84 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Psychotria p. 56Public domain
Show the original text
Psychotria (Rubiaceae). P. nervosa had germ. 70D(6/7 in 6-23 w) and 40- 70D(3/6 in 5-12 w)(1st Suppl.). Seeds DS 1 y germ. 70D{2/7 in 8th w). Seeds DS 2 y failed to germinate in 70D after 4 m and appear dead.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Psychotria p. 56. 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.