North America Native Plant

Santa Catalina Island Bedstraw

Botanical name: Galium catalinense catalinense

USDA symbol: GACAC2

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Santa Catalina Island Bedstraw: A Rare California Native Worth Protecting If you’re passionate about California native plants, you may have stumbled across the intriguingly named Santa Catalina Island bedstraw (Galium catalinense catalinense). This perennial herb represents one of nature’s more elusive treasures, and there’s an important conversation to be had ...

Rare plant alert!

Region: Conservation status by state

Status: S4T2T3: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is 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) ⚘ 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 ⚘

Santa Catalina Island Bedstraw: A Rare California Native Worth Protecting

If you’re passionate about California native plants, you may have stumbled across the intriguingly named Santa Catalina Island bedstraw (Galium catalinense catalinense). This perennial herb represents one of nature’s more elusive treasures, and there’s an important conversation to be had about whether it belongs in your garden.

What Makes This Plant Special?

Santa Catalina Island bedstraw is a native perennial that belongs to the bedstraw family, known for their delicate, whorled leaves and tiny flowers. As a forb herb, this plant lacks significant woody tissue and maintains its growth from buds at or below ground level – a characteristic that helps it persist through California’s varied seasons.

This particular species calls California home, representing part of the state’s unique botanical heritage that evolved in isolation on the Channel Islands and surrounding coastal areas.

The Rarity Reality Check

Here’s where things get serious: Santa Catalina Island bedstraw has a Global Conservation Status of S4T2T3, indicating uncertain population status and potential vulnerability. This rating suggests the plant may be quite rare, with limited distribution and possibly declining numbers.

What this means for gardeners: While supporting native plants is always admirable, rare species require special consideration. If you’re interested in growing this plant, it’s crucial to ensure any material comes from responsible, ethical sources that don’t impact wild populations.

Garden Suitability and Growing Conditions

Unfortunately, detailed growing information for this specific plant is limited due to its rarity and the lack of cultivation experience. However, as a California native perennial herb, it likely shares some characteristics with its bedstraw relatives:

  • Preference for Mediterranean climate conditions
  • Potential drought tolerance once established
  • Likely suited for naturalistic or native plant gardens
  • Possible preference for well-draining soils

Should You Plant It?

The short answer is: proceed with extreme caution. While Santa Catalina Island bedstraw is undoubtedly a fascinating native plant, its rarity status means that:

  • Wild collection could harm already vulnerable populations
  • Commercial availability is likely extremely limited or nonexistent
  • Growing requirements are poorly understood
  • Conservation efforts should take priority over cultivation

Better Alternatives for Your Native Garden

Instead of pursuing this rare species, consider these more readily available California native bedstraws and similar plants:

  • Common bedstraw (Galium aparine) – though this can be weedy
  • Other native Galium species that are more common and well-suited to cultivation
  • Native groundcovers and herbs that provide similar ecological functions

Supporting Conservation

The best way to help Santa Catalina Island bedstraw is to support conservation organizations working to protect California’s Channel Islands and coastal ecosystems. Sometimes the most loving thing we can do for a rare plant is to let it thrive in its natural habitat while we choose more common natives for our gardens.

Remember, every native plant garden makes a difference – even when filled with more common species. By choosing abundant natives over rare ones, you’re still supporting local ecosystems, pollinators, and wildlife while ensuring that precious rare plants remain in their natural homes where they belong.

Santa Catalina Island 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 catalinense A. Gray - Santa Catalina Island bedstraw

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