
Flower profile
Fernbush
Chamaebatiaria millefolium
Fernbush is a flowering plant that USDA PLANTS lists as native in the lower 48 states. It's on our flower lists for 2 states, and across the U.S. it's most often seen in bloom in June–September.
*iNaturalist research-grade observations, as of October 17, 2026.
Quick look
Chamaebatiaria is a monotypic genus of aromatic shrub in the rose family containing the single species Chamaebatiaria millefolium, which is known by the common names fern bush and desert sweet. Its genus name comes from its physical resemblance to the mountain miseries of genus Chamaebatia, which are not closely related. This is a hairy, sticky plant covered in fernlike foliage made up of fronds of small leaflets.
- It belongs to the Rosaceae family. iNaturalist
- USDA PLANTS describes it as a shrub with a perennial life cycle. USDA PLANTS
- USDA PLANTS lists it as native in the lower 48 states and records it in 6 states. USDA PLANTS
- NatureServe lists it as native to Arizona and Idaho. NatureServe
- In Arizona, most iNaturalist sightings of it in flower come in July–September. iNaturalist
- USDA PLANTS lists its flower color as white. USDA PLANTS
- USDA PLANTS gives its bloom period as mid summer. USDA PLANTS
- USDA PLANTS lists a mature height of about 6 ft. USDA PLANTS
- iNaturalist has 1,141 research-grade sightings of it in Arizona, ranking #93 among the 109 flowers on our Arizona list. iNaturalist
- iNaturalist has 542 research-grade sightings of it in Idaho, ranking #57 among the 109 flowers on our Idaho list. iNaturalist
Fernbush gift ideas
Handmade fernbush gifts from independent makers.
🌱 Sample spot. Handmade gift picks from independent shops will appear here once our shop partnership is approved. These cards are placeholders, not real products.
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Fernbush art print
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Fernbush greeting card
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Fernbush mug
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Fernbush earrings
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Fernbush embroidery pattern
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Fernbush sticker
When does it bloom?
Conservation status
- Federal (U.S. ESA)
- Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
- NatureServe global
- G4 Apparently secure worldwide. NatureServe
- Arizona
- Not listed Not on Arizona Native Plant Law protected plants (Ariz. Admin. Code R3-3 Art. 11, App. A, eff. Feb. 2, 2025). NatureServe: SNR, not yet ranked in Arizona. AAC R3-3 App. A
- Idaho
- No list Idaho has no state law listing endangered or threatened plants, so we show NatureServe's Idaho ranks instead. NatureServe: SNR, not yet ranked in Idaho.
- Rare elsewhere
- No other U.S. state ranks it S1, S2, SH or SX.
Checked October 17, 2026. Rankings and lists can change, so follow the links for the latest.
Can you eat it?
None of the sources we checked (NC State Extension (no page for this plant), USDA PLANTS) say whether it's edible or poisonous for people.
It isn't on the ASPCA plant list.
🌿 Never eat a wild plant unless you're certain of its ID; this isn't medical advice. Worried about a person? Call Poison Control at 1-800-222-1222. Worried about a pet? Call your vet.
Where does it grow?
USDA PLANTS records fernbush in 6 states.
recorded by USDA PLANTS on our state lists not recorded
See the full list of states
Arizona, California, Idaho, Nevada, Oregon, Utah.
Arizona counties with USDA records: Coconino, Mohave, Navajo, Yavapai.
Idaho counties with USDA records: Bingham, Blaine, Bonneville, Butte, Clark, Custer, Lemhi, Lewis, Lincoln, Valley.
More Arizona flowers
Sources
- USDA, NRCS. PLANTS Database, profile CHMI2.
- iNaturalist, Chamaebatiaria millefolium: taxonomy, research-grade observation counts and “Flowering” annotations, retrieved October 17, 2026.
- Wikipedia, Chamaebatiaria (lead quoted under CC BY-SA 4.0).
- Arizona: Arizona Native Plant Law protected plants (Ariz. Admin. Code R3-3 Art. 11, App. A, eff. Feb. 2, 2025).
- Arizona: Arizona prohibited noxious weeds (Ariz. Admin. Code R3-4-245).
- Idaho: Idaho noxious weeds (IDAPA 02.06.09, Section 220).
- USFWS, ECOS species database (ESA listing check), October 17, 2026.
- NatureServe Explorer, Chamaebatiaria millefolium (global and state ranks).
- Edibility and toxicity: no source found (marked "not well documented").
- Photo: Dawn Nelson via iNaturalist · CC BY 4.0 · resized.


