Deno’s Garden

Rubus parviflorus

Genus Rubus

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 February 15, 2027 for a May 3 last frost.

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 49 days to germinate.

25% germination in 28–49 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Rubus p. 207Public domain
Show the original text
Rubus (Rosaceae). A. parviflorus germ. 70 GA-3(25% in 4-7 w), 70D(none), and 40-70D(6%). Eugene Zielinski communicated that it germ. in April in outdoor treatment.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Rubus p. 207. 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 Very high 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. 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. Germination time not stated; 21 days assumed.

6% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Rubus p. 207Public domain
Show the original text
Rubus (Rosaceae). A. parviflorus germ. 70 GA-3(25% in 4-7 w), 70D(none), and 40-70D(6%). Eugene Zielinski communicated that it germ. in April in outdoor treatment.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Rubus p. 207. 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.