Carter's Buttercup

Ranunculus bonariensis

Native to:
Argentina, Brazil, Chile, Paraguay, Peru, United States, Uruguay

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Ranunculaceae
Genus:
Ranunculus
Species:
Ranunculus bonariensis
USDA Symbol:
RABO

Growth Characteristics

Life Cycle:
Annual
Growth Habit:
Geophyte
Height:
60 cm
Light Requirements:
Full Sun
Drought Tolerance:
Low
Bloom Months:
mar,apr,may,jun,jul,aug
Bloom Colors:
yellow

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)

Keystone Species Ranking

Pollen Specialist Bee Keystone:
★☆☆☆☆ Native pollen specialist bee species supported by this genus (NWF)

Garden & Ecology Notes

Wildlife Value:
bees
Deer Resistant:
Yes

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
native to wet meadows and marshy areas

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–42 days
Notes:
Seeds require light for germination. Cold stratification improves germination rates.

The above propagation data sourced from Claude AI

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).

Source: Claude AI