// Workers AI · dad joke modeDoes Helianthemum canadense rock? It's a rockrose.
 | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (July 2026) |
| Helianthemum canadense | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Embryophytes |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malvales |
| Family: | Cistaceae |
| Genus: | Helianthemum |
| Species: | H. canadense |
| Binomial name | |
| Helianthemum canadense | |
Helianthemum canadense or Crocanthemum canadense (known as longbranch frostweed, Canada frostweed, frostweed, rock frost, frostplant, or frostwort) is a species of rock-rose (Cistaceae), native to eastern North America.
Description
[edit]It is a flowering perennial 8–24 inches (200–610 mm) in height that blooms from May to June for a single day. Each stem normally has a single flower, but rarely can have two. The flower is yellow in color, with five petals and is between 3/4 and 1+1⁄4 inches across. The leaves are covered in hairs and alternate in pattern. The stems are also covered in hairs and are brown or green in color.
References
[edit]- USDA, NRCS. 2019. The PLANTS Database (http://plants.usda.gov, 5 February 2019). National Plant Data Team, Greensboro, NC 27401-4901 USA.
- wildflower.org
- Minnesotawildflowers.info
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