Deno’s Garden

Rheum ribes

Genus Rheum

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around March 22, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C

No stated waiting before sowing. Then 14 days to germinate.

100% germination in 14 days.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Rheum p. 204Public domain
Show the original text
Rheum (Polygonaceae). Germination was immediate at both 70 and 40. R. ribes germ. 70(2/4 in 4-6 d) and 40(4/4 in 2nd w).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Rheum p. 204. 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 Moderate Rated by us, not by the source.

Start around March 30, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 6 days to germinate.

50% germination in 4–6 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Rheum p. 204Public domain
Show the original text
Rheum (Polygonaceae). Germination was immediate at both 70 and 40. R. ribes germ. 70(2/4 in 4-6 d) and 40(4/4 in 2nd w).
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Rheum p. 204. 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.