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Geranium maculatum

Spotted Crane's-bill · Spotted Geranium · Wild Crane's-bill

Family GeraniaceaeGenus Geranium

A pale lilac five-petalled flower veined darker, above deeply cut palmate leaves
FlowerEric in SFCC 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
Pale lilacRead from the photograph on this page
Native range
Canada, lower 48 statesPLANTS Database

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

Worth knowing

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 September 29, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 28, 2026.

  1. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    2 germinated in this phase.

  3. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 6 months from start to step 3. Germination happens during step 3, in 9 days.

39% germination in 2–9 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Geranium p. 148Public domain
Show the original text
Geranium (Geranlaceae). G. maculatum germ. best (77%) in February through April from fresh seed sown the previous July and given outdoor treatment. Fresh seed also germ. .70-40(2%)- 70(39% in 2-9 d) and none in 40-70-40. Seed. DS 6 m-at 40 or 70 is largely dead.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Geranium p. 148. 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

  1. Cold moist stratification

    Temperature: 40°F 4°C

Germination happens during step 1.

0% germination.

Nothing germinated at 40.

This source doesn't state how long step 1 lasts.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Geranium p. 148Public domain
Show the original text
Geranium (Geranlaceae). G. maculatum germ. best (77%) in February through April from fresh seed sown the previous July and given outdoor treatment. Fresh seed also germ. .70-40(2%)- 70(39% in 2-9 d) and none in 40-70-40. Seed. DS 6 m-at 40 or 70 is largely dead.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Geranium p. 148. Quoted exactly. Every value on this card comes from this record; 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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