Ranunculus hispidus
Bristly Buttercup · Rough Buttercup · Hispid Buttercup
Also published as Ranunculus hispidulus. You are in the right place.
About the plant
What it is and where it grows — not part of any germination protocol.
Safety
- Toxicity
- Poisonous to cattle, goats, horses. All parts. Protoanemonin. Stated for Ranunculus spp.
The plant
- Habit
- Perennial, Forb/herbPLANTS Database
- Height
- 2.5 ftPLANTS Database
- Flower
- YellowPLANTS Database
- Blooms
- Early SpringPLANTS Database
- Native range
- Canada, lower 48 statesPLANTS Database
- Note
- Six months of dry storage at 70 or 40 killed the seed. Sow it fresh.Seed Germination Theory and Practice, 2nd ed.
Growing conditions
- Sun
- Shade tolerance: Low
- Moisture
- Moisture use: Medium
Toxicity is noted only where a source states it. No note here is not a finding of safety.
Sources: PLANTS Database — USDA NRCS; Plants Poisonous to Livestock — Cornell University Department of Animal Science; Seed Germination Theory and Practice, 2nd ed. — N. C. Deno.
This source reports three treatments. All are shown.
Protocol 1
DerivedN. C. Deno, 1993Difficulty High
Start around June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 2026.
Warm moist stratification
Duration: 90 daysTemperature: 70°F 21°C
10% here. Deno gives no length for this period; three months is his standard cycle.
Cold moist stratification
Duration: 90 daysTemperature: 40°F 4°C
A further 22%. Deno gives no length for this period; three months is his standard cycle.
Warm moist stratification
Duration: 90 daysTemperature: 70°F 21°C
Deno gives no length for this period; three months is his standard cycle.
Cold moist stratification
Temperature: 40°F 4°C
A further 27%.
about 9 months from start to sowing. Germination time not stated; 21 days assumed.
27% germination.
10, 22 and 27 per cent across four cycles -- about three fifths, over a year.
This source doesn't state how long.
Protocol 2
DerivedN. C. Deno, 1993Difficulty High
Start around June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 2026.
Cold moist stratification
Duration: 90 daysTemperature: 40°F 4°C
2% here. Deno gives no length for this period; three months is his standard cycle.
Warm moist stratification
Duration: 90 daysTemperature: 70°F 21°C
A further 2%. Deno gives no length for this period; three months is his standard cycle.
Cold moist stratification
Duration: 90 daysTemperature: 40°F 4°C
A further 11%. Deno gives no length for this period; three months is his standard cycle.
Warm moist stratification
Temperature: 70°F 21°C
A further 16%.
about 9 months from start to sowing. Germination time not stated; 21 days assumed.
16% germination.
Starting cold is slower off the mark: 2, 2, 11 and 16 per cent.
This source doesn't state how long.
Protocol 3
DerivedN. C. Deno, 1993Dry storage
Duration: 180 days
Dead after six months, at 70 or 40.
Sow and cover
Temperature: 70°F 21°C
about 6 months from start to sowing.
0% germination.
Six months dry, at 70 or at 40, and the seed was simply dead. Sow it fresh.