Rayless Arnica

Arnica discoidea

perennial herbView on Calscape

Care

Sun

part shade

Size

1–2ft tall

Deer

Resistant

Container

Friendly

Native Range

North Coast and Cascade-Sierra region from Humboldt County to Modoc County, 2000-5000 ft elevation, in mixed conifer forests

Care Guide

Planting

Plant rayless arnica in partial shade, where it will thrive in Bay Area woodland and chaparral conditions. Space plants to accommodate their mature height of 1–2 feet. Plant in fall or winter when the soil is moist and the plant can establish its rhizomatous root system before the dry season.

After Planting

Water regularly during the first growing season to help the plant establish. Once established, rayless arnica is deer resistant and adapted to survive with minimal supplemental water, making it a low-maintenance choice for native gardens. The plant is a perennial that will emerge from its rhizomes each year, so avoid disturbing the soil around the plant's base.

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Endangered & Threatened Species Supported

Chalcedon CheckerspotEuphydryas chalcedona

California Species of Special Concern

CA Special Concern

Wildlife Supported