Purple Owl's-clover
Castilleja exserta
Also listed as Orthocarpus exsertus
Also known as Purple Owl-clover, Exserted Indian Paintbrush
Climate Match for your location
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A showy California wildflower with distinctive purple and white flowers arranged in a dense spike. It thrives in dry, sunny conditions and is ideal for native gardens and meadows.
Why grow it
Purple owl's-clover serves as a reliable native wildflower alternative to non-native spike-forming annuals in California gardens. It establishes readily in poor, well-draining soils where many ornamental alternatives struggle, making it suitable for low-input meadow plantings and erosion control. The plant attracts native pollinators and fits naturally into restored grassland communities without requiring supplemental irrigation once established.
Watch out for
This species germinates readily from seed but performs best with a cool, moist winter period followed by spring warmth, so timing of direct sowing matters in regions with atypical seasonal patterns. It can self-sow prolifically in favorable conditions, which may require management if you wish to maintain specific garden composition. Like many members of the Castilleja genus, it may hemi-parasitize nearby plants through its root system, so placement near other valued species warrants consideration.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Orobanchaceae
Native to the United States
Native Range
California native
Native to: Arizona, California, New Mexico
Seasonality
Bloom Season
Season of Interest
Herb
Soft non-woody plants of the field layer.
Succession Role
Tolerances & Soil
Establishment & Care
- Establishment
- Maintenance
- Propagation
A showy California wildflower with distinctive purple and white flowers arranged in a dense spike. It thrives in dry, sunny conditions and is ideal for native gardens and meadows.
Climate Match for your location
See how well Purple Owl's-clover grows in your area.
Enter your ZIP code and we'll show you how this plant fits your local climate.
Why grow it
Purple owl's-clover serves as a reliable native wildflower alternative to non-native spike-forming annuals in California gardens. It establishes readily in poor, well-draining soils where many ornamental alternatives struggle, making it suitable for low-input meadow plantings and erosion control. The plant attracts native pollinators and fits naturally into restored grassland communities without requiring supplemental irrigation once established.
Watch out for
This species germinates readily from seed but performs best with a cool, moist winter period followed by spring warmth, so timing of direct sowing matters in regions with atypical seasonal patterns. It can self-sow prolifically in favorable conditions, which may require management if you wish to maintain specific garden composition. Like many members of the Castilleja genus, it may hemi-parasitize nearby plants through its root system, so placement near other valued species warrants consideration.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Orobanchaceae
Native to the United States
Native Range
California native
Native to: Arizona, California, New Mexico
Seasonality
Bloom Season
Season of Interest
Herb
Soft non-woody plants of the field layer.
Succession Role
Tolerances & Soil
Establishment & Care
- Establishment
- Maintenance
- Propagation
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