photo of Helianthemum canadense

Helianthemum canadense

Frostweed

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Frostweed’s yellow flowers bloom May-June at the top of the stems and only open in sunlight. This plant does well in sandy or dry, rocky...

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Description:

Frostweed’s yellow flowers bloom May-June at the top of the stems and only open in sunlight. This plant does well in sandy or dry, rocky soil. It is best suited for naturalizing rather than formal landscapes. As temperatures drop in late fall, sap from the stems of this plant form ice crystals, inspiring its common name. Use in sunny areas of woodland gardens or for naturalizing. Frostweed may be difficult to find commercially. Tell your local garden center or nursery about your interest in this plant.

Plant Details:

Other Common Names: Longbranch Frostweed

Plant Type: Flower, Perennial

New Jersey Native: Yes

Bloom Times: Late Spring to Early Summer

Bloom Colors: Yellow

Deer Resistance: High

Attracts Pollinators and Wildlife: Butterflies

Salt Tolerance: Unknown

Hardiness Zone: 6a, 6b, 7a, 7b

Physiographic Region: All Regions in NJ

Grows in Special Ecoregions: Pinelands

Soil Characteristics

Soil Type: Loam, Organic, Sandy

Soil Moisture: Dry

Soil pH: Acidic, Slightly Acidic

Light Needs of Plant

Optimal Light: Full Sun

Light Range: Full Sun

Water Needs of Plant

Soil Moisture: Dry

Drought Tolerance: Medium

Size and Growth Rate

Height: 0.5 - 1.5 ft

Spread: 3 - 6 ft

Growth Rate: Medium