North America Non-native Plant

Stoneseed

Botanical name: Lithospermum

USDA symbol: LITHO3

Life cycle: annual

Habit: subshrub

Native status: It's either native or not native in Canada âš˜ It's either native or not native in the lower 48 states  

Stoneseed: A Hardy Wildflower for Low-Maintenance Gardens If you’re looking for a tough, no-fuss wildflower that can handle whatever Mother Nature throws at it, let me introduce you to stoneseed (Lithospermum). This unassuming little plant might not win any beauty pageants, but it’s got character, charm, and the kind of ...

Stoneseed: A Hardy Wildflower for Low-Maintenance Gardens

If you’re looking for a tough, no-fuss wildflower that can handle whatever Mother Nature throws at it, let me introduce you to stoneseed (Lithospermum). This unassuming little plant might not win any beauty pageants, but it’s got character, charm, and the kind of resilience that makes gardeners everywhere breathe a sigh of relief.

What Exactly Is Stoneseed?

Stoneseed belongs to the borage family and is what botanists call a forb – essentially a non-woody flowering plant that dies back to the ground each year (though some species are perennial). Don’t let the technical talk scare you; think of it as a wildflower that knows how to survive without your constant attention.

The name stoneseed comes from the plant’s distinctively hard, stone-like seeds that rattle around in their pods when mature. It’s nature’s own little maraca!

Where Does Stoneseed Call Home?

Stoneseed has quite the travel resume, growing naturally across a huge swath of North America. You’ll find various species thriving from coast to coast, including Alabama, Arizona, California, Colorado, Florida, Illinois, Montana, New York, Oregon, Texas, Washington, and many states in between. It also grows throughout much of Canada, from British Columbia to New Brunswick.

Why Your Garden Might Love Stoneseed

Here’s where stoneseed really shines – it’s practically indestructible once established. This plant thrives in conditions that would make other flowers throw in the towel:

  • Drought tolerant after the first season
  • Adaptable to various soil types
  • Low maintenance requirements
  • Attracts beneficial pollinators like bees and butterflies
  • Can naturalize in wildflower areas

The Look and Feel

Stoneseed typically produces small, tubular flowers that range from white to pale blue, with some species boasting more vibrant blue blooms that really pop in the landscape. The flowers cluster along the stems, creating a delicate, cottage garden feel. While individual blooms are small, they make up for it in sheer numbers and their appeal to pollinators.

Perfect Garden Companions

Stoneseed works beautifully in:

  • Native plant gardens
  • Wildflower meadows
  • Rock gardens
  • Prairie-style landscapes
  • Low-maintenance border areas

It’s not going to be the star of your formal flower bed, but it’s perfect for those areas where you want something pretty that can fend for itself.

Growing Stoneseed Successfully

The beauty of stoneseed lies in its simplicity. Here’s how to give it the best start:

Location: Choose a spot with full sun to partial shade. Stoneseed is surprisingly flexible about lighting conditions.

Soil: Well-draining soil is key. This plant doesn’t like wet feet, so avoid areas where water tends to pool. It’s quite happy in average to poor soils.

Hardiness: Most stoneseed species are quite cold-hardy, generally thriving in USDA zones 3-9, though this can vary by specific species.

Watering: Water regularly the first year to help establish roots, then step back and let nature take over. Mature plants are remarkably drought tolerant.

Maintenance: Minimal! You might want to deadhead spent flowers if you don’t want it to self-seed, but many gardeners let it naturalize.

A Word About Native Plants

While stoneseed species are found across North America, if you’re passionate about supporting local ecosystems, consider researching which specific stoneseed species are native to your particular region. Native plants provide the best support for local wildlife and are typically the most sustainable choice for your garden.

The Bottom Line

Stoneseed might not be the flashiest flower in the garden center, but it’s reliable, pollinator-friendly, and perfect for gardeners who appreciate plants that earn their keep without constant fussing. Whether you’re creating a wildflower meadow, filling in a tricky dry spot, or just want something that’ll come back year after year without drama, stoneseed deserves a spot on your plant list.

Sometimes the best garden companions are the ones that quietly do their job while you’re busy elsewhere – and stoneseed does exactly that, with a little wildflower charm thrown in for good measure.

Stoneseed

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

Boraginaceae Juss. - Borage family

Genus

Lithospermum L. - stoneseed

Species

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