

Seaside Alumroot (var. pilosissima) Heuchera pilosissima var. pilosissima variety
Seaside Alumroot (var. pilosissima) is a perennial wildflower native to the lower 48 states. A host for pollen-specialist native bees.
More about this plant
Heuchera pilosissima is a species of flowering plant in the saxifrage family known by the common name seaside alumroot and Parish's alumroot. It is endemic to the northern two thirds of the California coastline, where it grows on coastal bluffs and in nearby forests. This is a rhizomatous perennial herb producing lobed oval-shaped leaves 4 to 9 centimeters wide, each on a long petiole. The erect inflorescence reaches over half a meter in maximum height and is covered in glandular hairs. It bears dense clusters of rounded, hairy flowers. Each flower has pink or yellowish lobes tipped with small white or pink petals. The stamens and stigma protrude from the narrow mouth of the flower. Wikipedia →
Growing & care
USDA PLANTS · TRY- Hardiness
- ≥ zone 11 derived from its U.S. range
- Lifespan
- Perennial
Wildlife & pollinators
How pollinator value is scored →❧ Caterpillar hosts ~1 caterpillar species
Heuchera supports ~1 caterpillar species.
Native butterfly & moth caterpillars are the base of the terrestrial food web — most songbirds rear their young almost entirely on them. As a host for native Lepidoptera this is a modest genus.
Recorded feeding on Heuchera in North America, including:
✦ Bees specialist-bee host
Specialist native bees depend on it.
Some native bees are pollen specialists (oligolectic) — they raise young only on pollen from particular plant genera. Heuchera is a recorded specialist-bee host, so losing it can mean losing the bee that relies on it.
Sources for this entry (11) Open & cited
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