Large Mountain Fleabane
Erigeron coulteri
Last reviewed: June 2026
Toxicity unknown
Large Mountain Fleabane (Erigeron coulteri) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
full sun
Water
low
Size
4"–12" H × 3"–6" W
Bloom
Jun, Jul, Aug
Native to
CA, CO, ID, MT and 5 more states
Pollinators
bees, butterflies, beetles
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 437 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaBrowse plants for this ecoregion
Large mountain fleabane is a compact perennial wildflower that forms low mounds of foliage topped with white daisy-like flowers. It blooms throughout summer and requires minimal water once established, making it ideal for xeriscaping.
In an HOA neighborhood
Large Mountain Fleabane is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.
Works well in: front yard, foundation, street edge, mid zone.
Wildlife value
This native plant attracts bees, butterflies, and beetles during its long summer blooming period. Its nectar-rich flowers provide important food sources for pollinators.
Common questions
- How much sun does Large Mountain Fleabane need?
- Large Mountain Fleabane grows best in full sun conditions.
- When does Large Mountain Fleabane bloom?
- Large Mountain Fleabane blooms in June, July, and August.
- Where is Large Mountain Fleabane native?
- Large Mountain Fleabane (Erigeron coulteri) is native to CA, CO, ID, MT and 5 more states, per vouchered herbarium specimen records and regional native plant society lists.
- What pollinators does Large Mountain Fleabane attract?
- Large Mountain Fleabane draws bees, butterflies, and beetles.
- Is Large Mountain Fleabane HOA-friendly?
- Large Mountain Fleabane is generally an HOA-friendly choice in the right placement, with low maintenance.
Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Large Mountain Fleabane? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Not sure where to start? Take the 2-minute yard quiz