FNPS Plant Database

Crocanthemum spp.

rockrose

PHOTOS COMING SOON!

Nomenclature

Common Name:

rockrose

Synonym(s):

Helianthemum spp.

Genus species:

Crocanthemum spp.

Family:

Cistaceae

Plant Specifics

Form:

flower

Size:

0.5-1.5 ft tall by clonal ft wide

Life Span:

Long-lived perennial

Flower Color:

yellow

Fruit Color:

white

Phenology:

winter dormant

Noted For:

Showy Flowers

Landscaping

Recommended Uses:

Wildflower garden. Rarely grown, mostly small wildflowers. Plant near the front of the garden so that they will be seen.

Considerations:

Availability:

Seed

Propagation:

Seed. Some can be grown by dividing clumps.

Light:

Full Sun

Moisture Tolerance:

Always Flooded------------------------------------------------Extremely Dry

Coming Soon!

Somewhat moist, no flooding ---to--- Very long very dry periods

Salt Water Flooding Tolerance:

Unknown

Salt Spray/Salty Soil Tolerance:

Some tolerance to salty wind but not direct salt spray

Soil or Other Substrate:

Sand

Soil pH:

Slightly acidic to neutral

Suitable to Grow In:

8A,8B,9A,9B,10A,10B

USDA zones are based on the average annual extreme minimum winter temperature.



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Ecology

Wildlife:

Pollinators

The primary pollinator is bees, including bumblebees,  though at least for some species, flies and beetles visit some Crocanthemum species.

Native Habitats:

Mostly in open, relatively dry sites.

Natural Range in Florida:

Comments:

Ethnobotany:

General Comments:

Choose a species that grows naturally in your area.

Citations:

Rodríguez-Pérez J. (2005). Breeding system, flower visitors and seedling survival of two endangered species of Helianthemum (Cistaceae). Annals of botany, 95(7), 1229–1236. https://doi.org/10.1093/aob/mci137

C. canadenses -- https://www.dnr.state.mn.us/rsg/profile.html?action=elementDetail&selectedElement=PDCIS02030 Wunderlin, R. P., B. F. Hansen, A. R. Franck, and F. B. Essig. 2021. Atlas of Florida Plants (http://florida.plantatlas.usf.edu/). Institute for Systematic Botany, University of South Florida, Tampa.

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