North America Native Plant

Soft-hair Marbleseed

Botanical name: Onosmodium bejariense var. bejariense

USDA symbol: ONBEB

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Onosmodium molle Michx. (ONMO)  âš˜  Onosmodium molle Michx. var. bejariense (DC. ex A. DC.) Cronquist (ONMOB2)  âš˜  Onosmodium molle Michx. ssp. bejariense (DC. ex A. DC.) Cochrane (ONMOB3)  âš˜  Onosmodium molle Michx. ssp. molle (ONMOM)   

Soft-Hair Marbleseed: A Hidden Gem for Native Plant Enthusiasts Meet soft-hair marbleseed (Onosmodium bejariense var. bejariense), a native perennial that might not win any beauty contests but certainly deserves a spot in the hearts of dedicated native plant gardeners. This unassuming member of the borage family brings subtle charm and ...

Rare plant alert!

Region: Alabama

Status: S4S5T3: 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. ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state 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. ⚘ 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. ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state 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. ⚘ 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: Alabama

Region: Alabama

Soft-Hair Marbleseed: A Hidden Gem for Native Plant Enthusiasts

Meet soft-hair marbleseed (Onosmodium bejariense var. bejariense), a native perennial that might not win any beauty contests but certainly deserves a spot in the hearts of dedicated native plant gardeners. This unassuming member of the borage family brings subtle charm and ecological value to naturalistic landscapes across the southeastern United States.

What Makes Soft-Hair Marbleseed Special

Don’t let the soft-hair part fool you – this plant is anything but cuddly! Soft-hair marbleseed gets its name from the fine hairs covering its leaves and stems, which feel surprisingly rough to the touch. This perennial forb (a fancy term for a non-woody flowering plant) produces small, creamy-white tubular flowers arranged in distinctive coiled clusters that gradually unfurl as the blooms open.

You might also encounter this plant under its various scientific aliases, including Onosmodium molle and its several varieties and subspecies – botanists love their name changes!

Where You’ll Find It Growing Wild

Soft-hair marbleseed calls the southeastern and south-central United States home, naturally occurring across nine states: Alabama, Arkansas, Illinois, Kentucky, Louisiana, Maryland, Oklahoma, Tennessee, and Texas. This native species thrives in open woodlands, prairies, and disturbed areas throughout its range.

A Word of Caution: Rarity Matters

Before you rush out to plant soft-hair marbleseed, here’s something important to consider: this species has a rarity status that varies by location. In Alabama, for instance, it’s ranked as S2, meaning it’s imperiled and potentially vulnerable to extinction in that state. If you’re interested in growing this plant, please ensure you source it responsibly from reputable native plant nurseries rather than collecting from wild populations.

Is Soft-Hair Marbleseed Right for Your Garden?

Let’s be honest – soft-hair marbleseed isn’t going to be the star of your flower border. Its modest appearance and somewhat rough texture make it better suited for specific gardening goals rather than general ornamental use. Here’s when you might want to consider it:

  • You’re creating a native plant garden focused on regional species
  • You’re working on prairie restoration or naturalistic landscaping
  • You want to support local pollinators with native flowering plants
  • You appreciate the subtle beauty of wildflowers over flashy garden hybrids

Growing Conditions and Care

The good news is that soft-hair marbleseed is relatively low-maintenance once you understand its preferences. As a native species adapted to various habitats, it’s generally quite adaptable:

  • Light: Full sun to partial shade
  • Soil: Well-drained soils of various types
  • Water: Drought tolerant once established
  • Hardiness: USDA zones 5-9

Planting and Care Tips

Growing soft-hair marbleseed successfully is surprisingly straightforward:

  • Plant in spring after the last frost date
  • Provide regular water during the first growing season to help establishment
  • Once established, this drought-tolerant perennial needs minimal supplemental watering
  • Allow the plant to self-seed if you want it to naturalize in your garden
  • No fertilization necessary – native plants prefer their natural soil conditions

Wildlife and Pollinator Benefits

While soft-hair marbleseed may not be a pollinator powerhouse, it does contribute to the local ecosystem by providing nectar for small native bees and other pollinators. Every native flowering plant adds to the complex web of relationships that support wildlife in your garden.

The Bottom Line

Soft-hair marbleseed is definitely a plant for the native plant enthusiast rather than the casual gardener. If you’re passionate about growing regional natives, supporting local ecosystems, or creating authentic prairie and woodland gardens, this modest perennial deserves consideration. Just remember to source it responsibly and appreciate it for what it is – a quiet contributor to your native landscape rather than a showstopper.

Sometimes the most important plants in our gardens are the ones that work behind the scenes, supporting the intricate relationships between plants, pollinators, and place that make native gardening so rewarding.

Soft-hair Marbleseed

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

Onosmodium Michx. - marbleseed

Species

Onosmodium bejariense DC. ex A. DC. - soft-hair marbleseed

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