North America Native Plant

Mexican Sweetcicely

Botanical name: Osmorhiza mexicana bipatriata

USDA symbol: OSMEB2

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Osmorhiza bipartriata Constance & Shan, database artifact (OSBI)  âš˜  Osmorhiza bipatriata Constance & Shan (OSBI2)  âš˜  Osmorhiza mexicana Griseb. ssp. bipartriata (Constance & Shan) Lowry & A.G. Jones, database artifact (OSMEB)   

Mexican Sweetcicely: A Rare Texas Native Worth Protecting If you’re a native plant enthusiast looking for something truly special for your Texas garden, Mexican sweetcicely (Osmorhiza mexicana bipatriata) might just be the hidden gem you’ve been searching for. But before you start planning where to plant it, there’s something important ...

Rare plant alert!

Region: Conservation status by state

Status: S5T1: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ 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. ⚘

Mexican Sweetcicely: A Rare Texas Native Worth Protecting

If you’re a native plant enthusiast looking for something truly special for your Texas garden, Mexican sweetcicely (Osmorhiza mexicana bipatriata) might just be the hidden gem you’ve been searching for. But before you start planning where to plant it, there’s something important you need to know about this elusive native.

What Is Mexican Sweetcicely?

Mexican sweetcicely is a perennial forb that belongs to the carrot family. As a forb, it’s an herbaceous flowering plant that lacks the woody stems of shrubs and trees, instead dying back to the ground each winter and returning fresh each spring. This particular subspecies is native to the United States, specifically calling Texas home.

The plant goes by the scientific name Osmorhiza mexicana bipatriata, though you might also see it referenced under several synonyms in older botanical literature, including Osmorhiza bipatriata.

Where Does It Grow?

This special native is found exclusively in Texas, making it a true Lone Star State original. Its limited geographic range contributes to its rarity and makes it all the more precious for local ecosystems.

A Word of Caution: Rarity Matters

Here’s where things get serious, fellow gardeners. Mexican sweetcicely carries a Global Conservation Status of S5T1, which indicates it’s extremely rare. This means that while you absolutely can and should consider growing this native beauty, you must be incredibly careful about your sources.

Important: Only obtain Mexican sweetcicely from reputable native plant nurseries that propagate their own stock or from responsible seed collection programs. Never collect plants or seeds from wild populations, as this could further threaten this already rare species.

Why Grow Mexican Sweetcicely?

Despite the sourcing challenges, there are compelling reasons to include this native in your garden:

  • You’ll be supporting biodiversity by growing a rare Texas native
  • It’s perfectly adapted to local growing conditions
  • As a member of the carrot family, it likely supports native pollinators
  • It’s a perennial, so once established, it’ll return year after year
  • You’ll be participating in conservation by maintaining genetic diversity

Garden Design and Landscape Use

While specific information about Mexican sweetcicely’s garden performance is limited due to its rarity, we can make educated guesses based on its plant family. Most Osmorhiza species thrive in woodland settings, making this plant potentially perfect for:

  • Native plant gardens
  • Woodland borders
  • Naturalized areas
  • Conservation gardens

Growing Conditions and Care

Unfortunately, detailed growing information for this specific subspecies is scarce, which is often the case with rare natives. However, if you’re lucky enough to source this plant, treat it with the respect it deserves:

  • Provide conditions similar to its natural Texas habitat
  • Avoid disturbing established plants unnecessarily
  • Allow it to go to seed to potentially increase your population
  • Share seeds responsibly with other native plant enthusiasts

The Bottom Line

Mexican sweetcicely represents both an opportunity and a responsibility. If you can source it ethically, you’ll be growing a piece of Texas botanical heritage while contributing to its conservation. However, its rarity means this isn’t a plant for casual gardening—it’s for dedicated native plant enthusiasts who understand the importance of preserving our botanical heritage.

Consider reaching out to local native plant societies, botanical gardens, or university extension programs in Texas. They may have information about conservation efforts or responsible sources for this remarkable rare native.

Remember: every rare native plant in cultivation is a victory for biodiversity. But that victory only counts if we’re growing them responsibly and ethically.

Mexican Sweetcicely

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Apiales

Family

Apiaceae Lindl. - Carrot family

Genus

Osmorhiza Raf. - sweetroot

Species

Osmorhiza mexicana Griseb. - Mexican sweetcicely

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