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Hoary Frostweed

Crocanthemum bicknellii

Found in woodlands, glades, barrens, rock outcrops, grassy balds, serpentine grasslands, to at least 1500m in elevation. Weakley, Flora of the Southeastern United States (2025), Northern Tier edition What its natural habitat tells you

28
Good

Native to Virginia. How scores work Is it native here?

Profile 76%

Height
8–24 inches
Light
Partial shade, Full sun
Soil moisture
Dry
Will it fit your yard?

Rare or protected plant. Specialist conservation planting; excluded from routine garden suggestions. Plant caution source

Hidden from default planting suggestions. Wildlife value and native status remain unchanged.

At a glance

Life cycle
Perennial
Fruiting season
August to October

Not yet recorded · Spread · Leaves · Bloom

Bloom: NC species account not read yet.

Spread and leaves: no source found yet.

This plant is missing most of its facts, so Quercus is looking them up in old botany books.

Recorded in 7 Virginia counties.

Natural habitats

Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.

1 of 4

Mountain balds

Andrews Bald, Forney Ridge Trail, July 2020
Grassy mountain bald with shrub islands. Shown: Andrews Bald, Forney Ridge Trail, Swain County, North Carolina, a neighboring state.Andrews Bald, Forney Ridge Trail, July 2020, Andrea Walton / Great Smoky Mountains National Park, July 2020. Public domain. Source record.

Prairies and grasslands

Barrens native plants returning after prescribed fire, September 2020
Barrens grassland after a prescribed fire. Shown: Mammoth Cave National Park, Kentucky, a neighboring state.Barrens native plants returning after prescribed fire, September 2020, NPS Photo / Rick Olson, September 2020. Public domain. Source record.

Forests and woodlands

Forest or woodland where the source does not say how moist or dry.

Glades, barrens and outcrops on mafic or serpentine rock

Open, thin-soil openings, outcrops and cliffs on dark, magnesium- or iron-rich rock such as serpentine, diabase or gabbro.

All habitats

Also found with this plant

Wildlife whose habitat models include habitats this plant grows in, in Virginia. Shared habitat, not food. 125 animals.

All wildlife of Virginia

Ecological relationships

Who uses this plant?

What these records mean

3CaterpillarsGenus host records with ranges including VA

Genus host records with ranges including VA · Crocanthemum

  • Anavitrinella pampinariaCommon Gray, Cranberry Spanworm
  • Platynota flavedanaBlack-Shaded Platynota
  • Chionodes franclemonti
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
2BeesSoutheastern regional records

Southeastern regional records · Crocanthemum

Individual names are not available yet.

Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
0Specialist beesPollen specialists
—BirdsRecorded genus food-resource interactions; not a state feeding claim

No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects

Growing and identification

Plant details

Family
Cistaceae
Flower color
Yellow
Fruit begins
August
Fruit ends
October
Growing sources and scope
Also known as

Helianthemum bicknellii

Conservation status

Virginia rankS1
Global rankG5
VA statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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How to check your spot

Sources