North America Native Plant

Greentinge Indian Paintbrush

Botanical name: Castilleja chlorotica

USDA symbol: CACH15

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Greentinge Indian Paintbrush: A Rare Oregon Native Worth Protecting Meet the greentinge Indian paintbrush (Castilleja chlorotica), one of Oregon’s most elusive wildflowers and a true conservation gem. Unlike its flashy red and orange relatives that steal the show in mountain meadows, this understated beauty flies under the radar with its ...

Rare plant alert!

Region: Conservation status by state

Status: S3: Status is uncertain but is somewhere between the following rankings: 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 ⚘

Greentinge Indian Paintbrush: A Rare Oregon Native Worth Protecting

Meet the greentinge Indian paintbrush (Castilleja chlorotica), one of Oregon’s most elusive wildflowers and a true conservation gem. Unlike its flashy red and orange relatives that steal the show in mountain meadows, this understated beauty flies under the radar with its subtle greenish-yellow blooms. But don’t let its modest appearance fool you – this little perennial forb packs a powerful conservation punch.

What Makes Greentinge Indian Paintbrush Special

Greentinge Indian paintbrush is what botanists call a forb – essentially a non-woody flowering plant that comes back year after year. Think of it as the wildflower equivalent of your favorite perennial garden plants, except this one has been calling Oregon home long before any of us arrived on the scene.

What sets this paintbrush apart isn’t just its unique coloring, but its incredible rarity. With a Global Conservation Status of S3 (Vulnerable), this species is like finding a four-leaf clover in the plant world. There are typically only 21 to 100 known populations with somewhere between 3,000 and 10,000 individual plants total – making it more precious than garden gold.

Where to Find This Oregon Exclusive

Here’s the thing about greentinge Indian paintbrush – it’s an Oregon exclusive! This native species grows only in the beautiful state of Oregon, making it a true botanical treasure for Oregonians and a must-see for native plant enthusiasts visiting from other states.

Should You Grow Greentinge Indian Paintbrush?

The short answer? Only if you’re deeply committed to conservation and can source it responsibly. Here’s why this plant presents both an incredible opportunity and a significant challenge:

The Conservation Case

Growing this rare native supports biodiversity and helps preserve Oregon’s botanical heritage. Every responsibly grown plant potentially contributes to the species’ survival.

The Reality Check

Castilleja species are notoriously difficult to grow because they’re semi-parasitic. They literally need to attach to the roots of other plants (usually grasses) to survive. It’s like trying to grow a plant that insists on having very specific roommates!

Growing Conditions and Care

If you’re determined to try growing greentinge Indian paintbrush, here’s what you need to know:

  • Climate: Thrives in USDA hardiness zones 8-9, matching Oregon’s temperate climate
  • Habitat: Prefers meadows and grassland environments
  • Companions: Requires native grass hosts to survive – think of it as the ultimate plant that doesn’t like living alone
  • Soil: Well-draining soils typical of Oregon’s native grasslands
  • Maintenance: Low maintenance once established, but establishment is the tricky part

Wildlife and Pollinator Benefits

Like other members of the paintbrush family, greentinge Indian paintbrush likely provides nectar for native bees and may attract hummingbirds. Its presence in a native garden contributes to the complex web of relationships that support local wildlife populations.

The Bottom Line

Greentinge Indian paintbrush represents everything we love about native plants – it’s uniquely adapted to its home landscape, supports local wildlife, and tells the story of Oregon’s natural heritage. However, its rarity means this isn’t a plant for casual gardeners.

If you’re passionate about conservation and want to grow this species, please:

  • Only purchase from reputable native plant nurseries that propagate ethically
  • Never collect from wild populations
  • Consider it an advanced gardening challenge requiring patience and dedication
  • Connect with local native plant societies for growing advice and ethical sources

For most native gardeners, supporting this species might mean visiting and protecting its natural habitats rather than growing it at home. Sometimes the best way to love a rare plant is to admire it in its native setting and work to preserve the wild places where it belongs.

Greentinge 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 chlorotica Piper - greentinge 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