North America Native Plant

Modoc Bedstraw

Botanical name: Galium glabrescens modocense

USDA symbol: GAGLM

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Modoc Bedstraw: A Rare California Native Worth Knowing About Meet Modoc bedstraw (Galium glabrescens modocense), one of California’s more elusive native plants that most gardeners have probably never heard of—and for good reason. This perennial herbaceous plant is so uncommon that finding detailed information about it feels like searching for ...

Rare plant alert!

Region: Conservation status by state

Status: S4T3: 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 ⚘

Modoc Bedstraw: A Rare California Native Worth Knowing About

Meet Modoc bedstraw (Galium glabrescens modocense), one of California’s more elusive native plants that most gardeners have probably never heard of—and for good reason. This perennial herbaceous plant is so uncommon that finding detailed information about it feels like searching for a needle in a haystack made of other needles.

What Makes This Plant Special

Modoc bedstraw belongs to the larger bedstraw family, known for their delicate, sprawling growth habits and tiny flowers. As a perennial forb, this plant lacks woody stems and returns year after year from its root system. Like its bedstraw cousins, it’s likely a low-growing, spreading plant that forms delicate mats or clusters.

Where You’ll Find It (If You’re Lucky)

This native California species has an extremely limited range, found only within the Golden State. Its exact distribution appears to be quite restricted, which explains why so little is known about its garden potential and growing requirements.

The Rarity Factor: Handle with Care

Here’s where things get serious. Modoc bedstraw carries a Global Conservation Status of S4T3, indicating it’s a plant of conservation concern. This means if you’re fortunate enough to encounter it in the wild or find it available through specialized native plant sources, you should:

  • Only obtain plants from reputable nurseries that use responsibly sourced, legally propagated material
  • Never collect from wild populations
  • Consider it a privilege to grow such a rare native species
  • Share seeds or divisions only with other committed native plant gardeners

Growing Modoc Bedstraw: An Educated Guess

Since specific growing information for this subspecies is virtually non-existent, we can make educated assumptions based on other California bedstraws:

  • Likely prefers well-draining soils typical of California’s Mediterranean climate
  • Probably drought-tolerant once established
  • May prefer partial shade to full sun
  • Could work well in rock gardens or naturalized areas
  • Hardiness zones likely appropriate for most of California’s varied climates

Should You Grow It?

The honest answer? Probably not, unless you’re a serious native plant collector with access to ethically sourced material and a commitment to conservation. This isn’t a plant you’ll find at your local nursery, and its rarity means it’s more of a conservation project than a typical garden addition.

Better Alternatives for Most Gardeners

If you’re drawn to the idea of growing native bedstraws, consider these more readily available California natives:

  • Northern bedstraw (Galium boreale)
  • Fragrant bedstraw (Galium triflorum)
  • Other regionally appropriate Galium species

The Bottom Line

Modoc bedstraw represents one of those fascinating botanical mysteries that remind us how much we still don’t know about our native flora. While it may not be the plant that transforms your garden, learning about species like this helps us appreciate the incredible diversity of California’s native plant communities—and the importance of protecting them.

If you do encounter this rare beauty, consider yourself among the fortunate few. Just remember to admire responsibly and always prioritize conservation over cultivation when it comes to our rarest native species.

Modoc Bedstraw

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

Rubiales

Family

Rubiaceae Juss. - Madder family

Genus

Galium L. - bedstraw

Species

Galium glabrescens (Ehrend.) Dempster & Ehrend. - Castle Lake bedstraw

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