Twin Arnica
Arnica sororia
Last reviewed: June 2026
Light
full sun
Water
low
Size
6"–16" H × 4"–12" W
Bloom
May, Jun, Jul
Native to
CA, ID, MT, NV and 4 more states
Pollinators
bees, butterflies
Browse plants for this ecoregion
Twin arnica is a low-growing perennial wildflower native to mountain regions. It produces bright yellow daisy-like blooms from May through July and forms compact clumps that spread slowly over time. This drought-tolerant plant thrives in full sun conditions with minimal water requirements once established.
In an HOA neighborhood
Twin Arnica 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.
- Appears very wild and informal
- May look sparse or weedy outside bloom period
- Uncommon plant that HOAs might not recognize as intentional landscaping
Wildlife value
The cheerful yellow flowers attract native bees and butterflies during the spring and early summer blooming period. It provides important nectar resources for pollinators.
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.
Does Twin Arnica fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.