Early Buttercup
Ranunculus fascicularis
Last reviewed: June 2026
Ranunculus fascicularis (Early Buttercup) is a native spring wildflower blooming in April and May across eastern and central United States. This drought-tolerant perennial produces bright yellow flowers and thrives in sunny locations.
Early Buttercup is toxic to dogs and cats.
Listed as toxic by the ASPCA Animal Poison Control Center (opens in new tab) (last reviewed 2026-05-21). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435and your veterinarian's emergency line.
Pollinator Patch flags toxic plants so you can choose a pet-safe native alternative for your yard.
Light
full sun
Water
low
Size
4"–12" H × 4"–12" W
Bloom
Apr, May
Native to
AL, AR, CT, GA and 26 more states
Pollinators
bees, beetles
Browse plants for this ecoregion
Early buttercup is a low-growing native wildflower that produces bright yellow, five-petaled flowers in April and May. This compact perennial forms small clumps and goes dormant by midsummer, disappearing completely until the following spring. It thrives in full sun with minimal water once established.
Growing Early Buttercup
Grow Early Buttercup in full sun and low water. Mature plants reach 4 to 12 inches tall and spread 4 to 12 inches wide. Expect low maintenance to keep it looking intentional in a front yard.
In an HOA neighborhood
Early Buttercup takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Goes completely dormant by midsummer leaving bare spots
- Common name includes 'buttercup' which may sound weedy to HOAs
- Very short bloom period followed by long dormancy
Wildlife value
The cheerful yellow blooms provide early-season nectar for native bees and beetles when few other flowers are available. This makes it particularly valuable for supporting pollinators emerging from winter dormancy.
Common questions
- When does Ranunculus fascicularis bloom?
- Early Buttercup blooms in April and May, making it one of the first wildflowers to appear in spring.
- Where is Ranunculus fascicularis native?
- This species is native to 30 states across the eastern and central United States, from Massachusetts south to Georgia and west to Texas and Minnesota.
- What pollinators visit Early Buttercup?
- Ranunculus fascicularis attracts bees and beetles, which visit the flowers for nectar and pollen during the early spring bloom period.
- What growing conditions does Early Buttercup prefer?
- This native wildflower thrives in full sun to partial sun with low to moderate water requirements, making it well-suited for dry prairies and open woodlands.
- Is Early Buttercup toxic to dogs?
- Yes. Early Buttercup is listed as toxic to dogs by the ASPCA Animal Poison Control Center (aspca.org). If your pet has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.
- Is Early Buttercup toxic to cats?
- Yes. Early Buttercup is listed as toxic to cats by the ASPCA Animal Poison Control Center (aspca.org). If your cat has been exposed, call the ASPCA Animal Poison Control Center at (888) 426-4435.
- Is Early Buttercup HOA-friendly?
- Early Buttercup takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Pollinator Patch flags toxic plants like Early Buttercup and shows pet-safe natives for your ecoregion instead.
Not sure where to start? Take the 2-minute yard quiz