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Campanula latifolia

Giant Bellflower · Great Bellflower · Greater Bellflower

Family CampanulaceaeGenus Campanula

Violet bell flowers with pointed reflexed lobes and a white three-part style, among toothed leaves
FlowerKurt Stüber [1]CC BY-SA 3.0

About the plant

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

Habit
perennialPlants of the World Online
Habit
Perennial, Forb/herbPLANTS Database
Flower
Dark purple-blueFlora of Pakistan
Native range
Altay, Austria, Baltic States, Belarus, Bulgaria, Central European Russia and elsewhereGBIF Backbone Taxonomy

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

Sources: Plants of the World Online — Royal Botanic Gardens, Kew; PLANTS Database — USDA NRCS; Flora of Pakistan — S. I. Ali and M. Qaiser (eds.); GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

  • The giant bellflower, from Europe and western Asia, grows easily even in full shade, stands drought quite well, and spreads by rhizomes as well as by self-sown seed. Wikipedia: Campanula latifolia

Two sources report two treatments between them. Both are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Low Rated by us, not by the source.

Start around March 24, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 12 days to germinate.

95% germination in 5–12 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. latifolia germ. 70D(95% in 5-12 d). Neither light nor a prior 3 m at 40 had much effect. Seeds DS 1 y were dead. C. latifolia alba gave only a single germination in a sample of.100 seeds even though the seeds appeared to be normal in size and shape and were collected at the same time as C. latifolia. - , C. -pyramidalis germ. 100% in 70D if fresh (2nd Ed.). Seeds DS 5 y were dead. Unfortunately the seeds were not tested at intermediate DS times.
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, 1996

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

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

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

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

3% germination in 14 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Campanula p. 28Public domain
Show the original text
Campanula (Campanulaceae). C. latifolia germ. 95% in 5-11 d in either 70D or 70L, and C. latifolia alba germ. 70D(1/36 in 2nd w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Campanula p. 28. 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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