Curveseed Butterwort
Ranunculus testiculatus
- Native to:
- Afghanistan, Algeria, Austria, Bulgaria, China, Czechia-Slovakia, Hungary, India, Iran, Kazakhstan, Kirgizstan, Krym, Morocco, North Caucasus, NW. Balkan Pen., Pakistan, Romania, Russia, Tadzhikistan, Transcaucasus, Türkiye, Turkmenistan, Ukraine, Uzbekistan
Andrey Zharkikh (www.flickr.com)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Ranunculaceae
- Genus:
- Ranunculus
- Species:
- Ranunculus testiculatus
- USDA Symbol:
- CETE5
Growth Characteristics
- Life Cycle:
- Annual
- Growth Habit:
- Geophyte
- Height:
- 5 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- mar,apr,may
- Bloom Colors:
- yellow
Keystone Species Ranking
- Pollen Specialist Bee Keystone:
- ★☆☆☆☆ Native pollen specialist bee species supported by this genus (NWF)
Garden & Ecology Notes
- Deer Resistant:
- Yes
- Salt Tolerant:
- Yes
Soil Requirements
- Soil Type:
- sandy, well-drained, nutrient-poor soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- prefers open, sunny habitats
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds germinate in cool conditions; fall-sown seeds may germinate following winter cold.
The above propagation data sourced from Claude AI
Pre-treatment: None required
Establishment: R. testiculatus is found through the western portion of North America.
Source: npn.rngr.net