Deno’s Garden

Campanula shetleri

Genus Campanula

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Moderate Rated by us, not by the source.

  1. Sow outdoors and leave it

    Up in late March through April.

No stated waiting before sowing.

67% germination.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Campanula p. 21Public domain
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Campanula (Campanulaceae). C. shetleri germ. 40-70D(2/5 in 2nd w), 70D-40,-70D{none), 70L-40-70L(1/8 on 4th d), and OT(6/9 in late March through April). •
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Campanula p. 21. 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 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 Light: dark

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

40% germination in 14 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Campanula p. 21Public domain
Show the original text
Campanula (Campanulaceae). C. shetleri germ. 40-70D(2/5 in 2nd w), 70D-40,-70D{none), 70L-40-70L(1/8 on 4th d), and OT(6/9 in late March through April). •
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Campanula p. 21. 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 3

DerivedN. C. Deno, 1998

Difficulty High Rated by us, not by the source.

Start around July 6, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 5, 2026.

  1. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

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

about 9 months from start to sowing. Then 4 days to germinate.

12% germination in 4 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Campanula p. 21Public domain
Show the original text
Campanula (Campanulaceae). C. shetleri germ. 40-70D(2/5 in 2nd w), 70D-40,-70D{none), 70L-40-70L(1/8 on 4th d), and OT(6/9 in late March through April). •
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Campanula p. 21. 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.