Deno’s Garden

Impatiens balfourii

Genus Impatiens

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 January 25, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C Light: either

No stated waiting before sowing. Then 70 days to germinate.

100% germination in 70 days.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Impatiens p. 39Public domain
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Impatiens (Balsaminaceae). I. balfouri germ. 40(100% in 10th w) and 70D-40(80% in 11th w). Light had no effect and GA-3 led to totai rotting of the seeds. Germination has been reported to be difficult, but the above results indicate that it is simply a matter of not recognizing a 40 germinator.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Impatiens p. 39. 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 23, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 22, 2026.

  1. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C Light: either

about 6 months from start to sowing. Then 77 days to germinate.

80% germination in 77 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Impatiens p. 39Public domain
Show the original text
Impatiens (Balsaminaceae). I. balfouri germ. 40(100% in 10th w) and 70D-40(80% in 11th w). Light had no effect and GA-3 led to totai rotting of the seeds. Germination has been reported to be difficult, but the above results indicate that it is simply a matter of not recognizing a 40 germinator.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Impatiens p. 39. 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.