North America Native Plant

Bush’s Skullcap

Botanical name: Scutellaria bushii

USDA symbol: SCBU

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Bush’s Skullcap: A Rare Ozark Treasure for Your Native Garden If you’re passionate about growing truly unique native plants, Bush’s skullcap (Scutellaria bushii) might just be the hidden gem you’ve been searching for. This charming little perennial is one of nature’s best-kept secrets, found only in a small corner of ...

Rare plant alert!

Region: Arkansas

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 ⚘ Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘

Region: Arkansas

Bush’s Skullcap: A Rare Ozark Treasure for Your Native Garden

If you’re passionate about growing truly unique native plants, Bush’s skullcap (Scutellaria bushii) might just be the hidden gem you’ve been searching for. This charming little perennial is one of nature’s best-kept secrets, found only in a small corner of the American heartland. But before you start planning where to plant it, there are some important things you should know about this rare beauty.

What Makes Bush’s Skullcap Special?

Bush’s skullcap is a delightful herbaceous perennial that belongs to the mint family. Unlike its woody cousins, this forb stays soft and green throughout the growing season, never developing the thick, bark-covered stems you’d see on shrubs or trees. What it lacks in size, it makes up for in charm, producing lovely tubular flowers in shades of blue to purple that seem to glow in the garden during late spring and early summer.

As a true native plant, Bush’s skullcap has been quietly thriving in American landscapes long before any of us started thinking about gardening. It’s perfectly adapted to local conditions and plays an important role in supporting native wildlife.

A Very Limited Address

Here’s where things get interesting – and a bit concerning. Bush’s skullcap has one of the most restricted ranges you’ll find among native plants. This little treasure calls only Arkansas and Missouri home, making it a true regional specialty of the beautiful Ozark region.

Important Conservation Considerations

Before you get too excited about adding this plant to your garden, there’s something crucial you need to know. Bush’s skullcap is considered vulnerable to extinction. It holds a global conservation status of S3, which means it’s at risk due to its very limited range and small population numbers. In Arkansas specifically, it’s even rarer, with an S2 status.

What does this mean for you as a gardener? If you decide to grow Bush’s skullcap, you must – and we cannot stress this enough – source it responsibly. Never collect plants from the wild, as this could push local populations closer to extinction. Instead, work only with reputable native plant nurseries that propagate their plants ethically.

Garden Appeal and Design Uses

Despite its rarity in the wild, Bush’s skullcap can be a wonderful addition to the right garden setting. Its modest height and spreading habit make it perfect for:

  • Native plant gardens focused on regional specialties
  • Rock gardens with well-drained conditions
  • Naturalized wildflower areas
  • Conservation gardens dedicated to rare species

The plant’s blue-purple blooms are particularly attractive to small native bees and other pollinators, making it a valuable addition to any pollinator-friendly landscape. While it may not be the showiest plant in your garden, it offers the deep satisfaction that comes from helping preserve a truly special piece of American botanical heritage.

Growing Conditions and Care

Based on its native Ozark habitat, Bush’s skullcap likely prefers well-drained soils and can handle both partial shade and full sun conditions. Like many native plants, it’s probably quite drought tolerant once established, making it a low-maintenance choice for gardeners in USDA hardiness zones 5 through 8.

The key to success with any native plant is mimicking its natural growing conditions as closely as possible. Since Bush’s skullcap comes from the rocky, well-drained soils of the Ozarks, avoid planting it in heavy clay or constantly wet areas.

Planting and Care Tips

  • Choose a location with good drainage – soggy soils are not this plant’s friend
  • Plant in spring after the last frost danger has passed
  • Water regularly the first year to help establishment, then reduce watering
  • Minimal fertilization needed – native plants prefer lean soils
  • Allow some areas to go undisturbed for natural self-seeding

The Bottom Line

Bush’s skullcap represents both an opportunity and a responsibility. If you’re drawn to rare native plants and want to contribute to conservation efforts right in your own backyard, this could be an excellent choice. However, approach it with the respect and care that any vulnerable species deserves.

Remember: only purchase from reputable sources that propagate their plants ethically, never collect from wild populations, and consider your garden a small but important refuge for this special Ozark endemic. Sometimes the most rewarding plants to grow are the ones that need our help the most.

Bush’s Skullcap

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

Lamiales

Family

Lamiaceae Martinov - Mint family

Genus

Scutellaria L. - skullcap

Species

Scutellaria bushii Britton - Bush's skullcap

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