North America Native Plant

Acute Indian Paintbrush

Botanical name: Castilleja hispida acuta

USDA symbol: CAHIA2

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Castilleja hispida Benth. var. acuta (Pennell) Pennell ex M. Peck (CAHIA)  âš˜  Castilleja taedifera Pennell (CATA3)   

Acute Indian Paintbrush: A Stunning Native Wildflower for Western Gardens If you’re looking to add a splash of fiery color to your native plant garden, the acute Indian paintbrush (Castilleja hispida acuta) might just be your new favorite wildflower. This vibrant perennial brings the brilliant reds and oranges of western ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3T4: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Subspecies or varieties is apparently secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the region or more than 10,000 individuals ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Acute Indian Paintbrush: A Stunning Native Wildflower for Western Gardens

If you’re looking to add a splash of fiery color to your native plant garden, the acute Indian paintbrush (Castilleja hispida acuta) might just be your new favorite wildflower. This vibrant perennial brings the brilliant reds and oranges of western meadows right to your backyard, creating a spectacular show that both you and local wildlife will absolutely love.

What Makes Acute Indian Paintbrush Special?

Also known by its botanical name Castilleja hispida acuta, this charming native belongs to a group of plants that know how to make an entrance. As a perennial forb herb, it returns year after year without the woody stems of shrubs or trees, instead sporting soft, herbaceous growth that emerges fresh each growing season.

The acute Indian paintbrush is a true western native, calling the lower 48 states home with particular emphasis on the Pacific Northwest and intermountain regions. You’ll find this beauty growing naturally across Idaho, Montana, Nevada, Oregon, and Washington, where it has adapted perfectly to the local climate and conditions.

Why You’ll Want This Plant in Your Garden

There are plenty of reasons to fall in love with acute Indian paintbrush, starting with its absolutely stunning visual appeal. The tubular flowers burst forth in brilliant shades of red-orange, creating dramatic color displays from spring through early summer. These aren’t your subtle, understated blooms – they’re bold, bright, and impossible to ignore in the best possible way.

But the beauty goes beyond just looks. This native wildflower is a pollinator magnet, particularly beloved by hummingbirds who can easily access the nectar in those perfectly shaped tubular flowers. Butterflies are frequent visitors too, making your garden a buzzing hub of beneficial activity.

Perfect Garden Settings

Acute Indian paintbrush absolutely shines in several garden styles:

  • Native plant gardens where it can mingle with other regional favorites
  • Wildflower meadows for a naturalized, prairie-like feel
  • Xeriscaped areas where its drought tolerance really shows off
  • Naturalized landscape edges for a soft transition to wilder spaces

Growing Conditions and Care

Here’s where things get interesting – acute Indian paintbrush is what botanists call hemiparasitic, which sounds scary but really just means it likes to form beneficial relationships with nearby plants. In the wild, it often partners with grasses and other plants, sharing nutrients through root connections. This actually makes it easier to grow when planted alongside compatible companions.

For successful growing, provide:

  • Well-drained soils (it really dislikes wet feet)
  • Full sun to partial shade conditions
  • USDA hardiness zones 4-8 coverage
  • Minimal water once established – this plant embraces drought tolerance

Planting and Care Tips

Getting acute Indian paintbrush established requires a bit of patience, but the payoff is absolutely worth it. Direct seeding in fall works best, as the seeds need that cold winter period to germinate properly in spring. Because of its unique growing habits, it’s often easier to establish when planted near potential host plants like native grasses.

Once established, this is refreshingly low-maintenance. The plant handles drought beautifully and doesn’t need regular fertilizing – in fact, too much fertility can actually reduce flowering. Simply let it do its thing, and it will reward you with years of spectacular blooms.

A Note About Sourcing

Acute Indian paintbrush has a conservation status that indicates some regional sensitivity, so it’s important to source your plants or seeds responsibly. Look for reputable native plant nurseries or seed suppliers who can guarantee their material comes from ethical, sustainable sources. Never collect from wild populations.

The Bottom Line

If you’re gardening in the western United States and want to create habitat while enjoying spectacular flowers, acute Indian paintbrush deserves a spot in your landscape. It’s native, beautiful, supports local wildlife, and once established, practically takes care of itself. Just remember to give it the well-drained conditions it craves and some compatible plant neighbors, and you’ll be rewarded with one of nature’s most brilliant wildflower displays.

Acute Indian Paintbrush

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Scrophulariales

Family

Scrophulariaceae Juss. - Figwort family

Genus

Castilleja Mutis ex L. f. - Indian paintbrush

Species

Castilleja hispida Benth. - harsh Indian paintbrush

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA