Oneflower Helianthella
Helianthella uniflora
Last reviewed: August 2026
Oneflower Helianthella (Helianthella uniflora) is a perennial forb native to AZ, CO, ID, MT and 5 more states. It blooms in June, July, and August. The flowers draw bees and butterflies. It reads as an intentional, HOA-friendly planting in the right spot.
Toxicity unknown
Oneflower Helianthella (Helianthella uniflora) 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.
The USDA PLANTS Database (opens in new tab) does not flag Oneflower Helianthella as toxic to livestock.
Light
part sun
Water
low
Size
6"–24" H × 4"–12" W
Bloom
Jun, Jul, Aug
Native to
AZ, CO, ID, MT and 5 more states
Pollinators
bees, butterflies
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 445 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
Oneflower helianthella is a compact native wildflower that produces bright yellow, daisy-like blooms throughout the summer months. This low-maintenance perennial forms neat clumps and thrives in dry conditions with minimal water once established. Its manageable size and cheerful flowers make it an attractive addition to xeriscaped gardens.
Growing Oneflower Helianthella
Grow Oneflower Helianthella in part sun and low water. Mature plants reach 6 to 24 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
Oneflower Helianthella is an HOA-friendly choice. Maintenance level: low. Tidiness: 3 out of 5.
Works well in: mid zone, foundation, front yard.
- May appear sparse or weedy when not in bloom
- Unknown leaf retention could affect winter appearance
Wildlife value
The bright yellow flowers attract native bees and butterflies during the long summer blooming period. Its nectar-rich blooms provide valuable food sources for pollinators from June through August.
Common questions
- How much sun does Oneflower Helianthella need?
- Oneflower Helianthella grows best in part sun conditions.
- When does Oneflower Helianthella bloom?
- Oneflower Helianthella blooms in June, July, and August.
- Where is Oneflower Helianthella native?
- Oneflower Helianthella (Helianthella uniflora) is native to AZ, CO, ID, MT and 5 more states, per the World Checklist of Vascular Plants (Kew).
- Is Oneflower Helianthella toxic to livestock?
- The USDA PLANTS Database does not flag Oneflower Helianthella as toxic to livestock.
- What pollinators does Oneflower Helianthella attract?
- Oneflower Helianthella draws bees and butterflies.
- Is Oneflower Helianthella HOA-friendly?
- Oneflower Helianthella is generally an HOA-friendly choice in the right placement, with low maintenance.
Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Oneflower Helianthella? 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