Castilleja exserta      
Owl's clover    
Scrophulariaceae Family     

Form: low, shrubby wildflower
Seasonality: annual
Size: 9in high with 1 ft spread
Leaves: feather or ferny, basal leaves
Flowers: pink to purple tufted spikes; bloom March to May

blooms on castilleja exserta

Fruit: n/a
Stems/Trunks: n/a
Range/Origin: mid-elevation grasslands of Southwest US and northern Mexico
Hardiness: 10-15 °F

LANDSCAPE VALUE:

• wildflower gardens
• annual color in the native garden
• flowers attract butterflies and bees

 

Owl's clover in a mixed wildflower bed

CULTURAL REQUIREMENTS:

• Exposure: full sun
• Water: once a month through the winter
• Soil: sandy or gravelly; well-drained mineral soil
• Propagation: sow seed in early to late Fall
• Maintenance: minimal

 

Research by Master Gardener Devona Painter

NOTES:

Can sow as late as November or December in irrigated garden.
Grow best in association with its community of spring wildflowers, including baby blue-eyes, California gold poppy, Lupines, orange globe mallow, desert bluebells, and sideoats grama.

Formerly known as Orthocarpus purpurascens

return to common name index				return to Botanical name index
	browse by common name				browse by botanical name

This page was first created May 31, 2004 and last modified June 1, 2006.

---

Web page design and photographs by Toni Moore, Master Gardener
email to: tmoore1@flash.net

© 2004 - 2006 Arizona Board of Regents. All contents copyrighted. All rights reserved.