Flower profile
Hoary tansyaster
Dieteria canescens
Hoary tansyaster (Dieteria canescens) is a flowering plant in the Asteraceae family, native in the lower 48 states, blooming mostly August–October across the U.S.
Hoary tansyaster is a wildflower that USDA PLANTS lists as native in the lower 48 states. In Nevada it's most often seen in bloom in April–November.
*iNaturalist research-grade observations, as of October 17, 2026.
On our lists for: Nevada
Quick look
Dieteria canescens is an annual plant or short lived perennial plant in the family Asteraceae, known by the common names hoary tansyaster and hoary-aster.
- It belongs to the Asteraceae family. iNaturalist
- USDA PLANTS describes it as an herb (forb) with a annual, biennial, perennial life cycle. USDA PLANTS
- USDA PLANTS lists it as native in the lower 48 states and records it in 15 states. USDA PLANTS
- NatureServe lists it as native to Nevada. NatureServe
- In Nevada, most iNaturalist sightings of it in flower come in April–November. iNaturalist
- iNaturalist has 442 research-grade sightings of it in Nevada, ranking #92 among the 132 flowers on our Nevada list. iNaturalist
When does it bloom?
In Nevada, most flowering sightings come in April–November.
Conservation status
- Federal (U.S. ESA)
- Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
- NatureServe global
- G5 Secure worldwide. NatureServe
- Nevada
- Not listed Not on Nevada fully protected plants, critically endangered (NAC 527.010). NatureServe: S5, secure in Nevada. NAC 527.010
- 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 hoary tansyaster in 15 states.
recorded by USDA PLANTS on our state lists not recorded
See the full list of states
Arizona, California, Colorado, Idaho, Iowa, Minnesota, Montana, Nebraska, Nevada, New York, North Dakota, Oregon, South Dakota, Utah, Wyoming.
Nevada counties with USDA records: Carson City, Churchill, Clark, Douglas, Elko, Esmeralda, Eureka, Humboldt, Lander, Lincoln, Lyon, Mineral, Nye, Pershing, Storey, Washoe, White Pine.
Names, range and relatives
Native status by region (USDA PLANTS): Canada: Native; Lower 48 states: Native.
Other scientific names (synonyms in USDA PLANTS): Aster canescens, Aster glossophyllus, Aster leiodes, Dieteria divaricata, Dieteria pulverulenta, Dieteria viscosa, Machaeranthera divaricata, Machaeranthera glabella, Machaeranthera latifolia, Machaeranthera leptophylla, Machaeranthera montana, Machaeranthera paniculata and 7 more.
County records: USDA PLANTS lists it in 153 counties across 11 states; the most are in Montana (34), Utah (25), California (22).
More from the Asteraceae family (212 on Bloomipedia; most observed first): Common yarrow, Goldenrods, White snakeroot, Sunflowers, Chicory, Black-eyed Susan, Bull thistle, Common dandelion.
More Nevada flowers
Sources
- USDA, NRCS. PLANTS Database, profile MACAC3.
- iNaturalist, Dieteria canescens: taxonomy, research-grade observation counts and “Flowering” annotations, retrieved October 17, 2026.
- Wikipedia, Dieteria canescens (lead quoted under CC BY-SA 4.0).
- Nevada: Nevada fully protected plants, critically endangered (NAC 527.010).
- Nevada: Nevada noxious weeds (NAC 555.010).
- USFWS, ECOS species database (ESA listing check), October 17, 2026.
- NatureServe Explorer, Dieteria canescens (global and state ranks).
- Edibility and toxicity: no source found (marked "not well documented").
- Photo: Farren Dell Rossman via iNaturalist · CC BY 4.0 · resized.