Deno’s Garden

Dioscorea quaternata

Genus Dioscorea

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around June 26, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 25, 2026.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 9 months from start to sowing. Then 14 days to germinate.

40% germination in 14 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Dioscorea p. 133Public domain
Show the original text
Dioscorea (Dloscoriaceae). D. quaternata germ. 70-40-70(2/5 in 2nd w) and 40-70(1/5 in 2nd w)-40(1/5 in 8th w) using fresh seed
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Dioscorea p. 133. 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, 1993

Difficulty High Rated by us, not by the source.

Start around September 23, 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

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    1/5 germinated in this phase.

Steps after step 2 run on after germination.

about 6 months from start to sowing. Then 14 days to germinate.

20% germination in 14 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Dioscorea p. 133Public domain
Show the original text
Dioscorea (Dloscoriaceae). D. quaternata germ. 70-40-70(2/5 in 2nd w) and 40-70(1/5 in 2nd w)-40(1/5 in 8th w) using fresh seed
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Dioscorea p. 133. 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.