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Rosa paulii

Paul's Rose

Family RosaceaeGenus Rosa

Also published as Rosa x paulii. You are in the right place.

Two white roses with five broad petals and a boss of golden stamens, among toothed leaflets on a prickly arching stem.
FlowerA. BarraCC BY-SA 4.0

About the plant

What it is and where it grows — not part of any germination protocol.

Flower
WhiteRead from the photograph on this page

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Source: Read from the photograph on this page — Deno's Garden.

Protocol

DerivedN. C. Deno, 1998

Difficulty Very high Rated by us, not by the source.

  1. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

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

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  5. Warm moist stratification

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

  6. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  7. Warm moist stratification

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

  8. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  9. Warm moist stratification

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

Steps after step 7 run on after germination.

about 18 months from start to step 7. Germination happens during step 7, in 3 days.

8% germination in 3 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Rosa p. 58Public domain
Show the original text
Rosa (Rosaceae). Germinations are characterized by two features. First is that germinations begin after several cycles and continue over several years. Second is that light or GA-3 have no effect. Germination may occur in either 70D or 40, but when germination occurs at 70 it-is usually within a few days after the shift to 70. R. paulii rosea germ. 70D-40-70D-40-70D-40-70D(1/12 on 3rd d)-40-70D(1).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Rosa p. 58. 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.

How each step is done, in Deno’s words, and what Verified and Derived mean.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

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