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Denseflower Indian paintbrush

Castilleja densiflora

Last reviewed: August 2026

Denseflower Indian paintbrush (Castilleja densiflora)
Photo: (c) Bill Bouton, some rights reserved (CC BY-SA)

Light

full sun

Water

low

Size

6"–16" H × 6"–12" W

Bloom

Mar, Apr, May

Native to

CA

Pollinators

bees

Before you buy

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Owl's clover is a low annual forb with narrow leaves and dense spikes of pink to purple tubular flowers tipped in white. It grows in open grasslands, drawing some of its water and nutrients from the roots of neighboring grasses.

Wildlife value

Host plant for Edith's Checkerspot.

The tubular flowers are pollinated by bees, and the genus is a well documented larval host for checkerspot butterflies, including Edith's Checkerspot.

Common questions

How much sun does Denseflower Indian paintbrush need?
Denseflower Indian paintbrush grows best in full sun conditions.
When does Denseflower Indian paintbrush bloom?
Denseflower Indian paintbrush blooms in March, April, and May.
Where is Denseflower Indian paintbrush native?
Denseflower Indian paintbrush (Castilleja densiflora) is native to CA, per vouchered herbarium specimen records and regional native plant society lists.
What butterflies or moths does Denseflower Indian paintbrush host?
Denseflower Indian paintbrush is a larval host plant for Edith's Checkerspot.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

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