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Hedeoma hispida

False Pennyroyal · Mock Pennyroyal · Rough False Pennyroyal

Family LamiaceaeGenus Hedeoma

Several short upright stems packed with small leaves, growing through a tangle of tall grasses
The whole plantMatt Lavin from Bozeman, Montana, USACC BY-SA 2.0

About the plant

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

Habit
annualPlants of the World Online
Habit
Annual, Forb/herbPLANTS Database
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.

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1996

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: light

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

80% germination in 8–12 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Hedeoma p. 48Public domain
Show the original text
Hedeoma (Lamiaceae). H. hispida germ. 70L(80% in 8-12 d) and 70D(70% in 1-3 w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Hedeoma p. 48. 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 Low Rated by us, not by the source.

Start around March 15, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 21 days to germinate.

70% germination in 7–21 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Hedeoma p. 48Public domain
Show the original text
Hedeoma (Lamiaceae). H. hispida germ. 70L(80% in 8-12 d) and 70D(70% in 1-3 w).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Hedeoma p. 48. 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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