North America Native Plant

Parks’ Jointweed

Botanical name: Polygonella parksii

USDA symbol: POPA6

Life cycle: annual

Habit: subshrub

Native status: Native to the lower 48 states  

Parks’ Jointweed: A Rare Texas Native That’s Better Admired Than Grown If you’ve stumbled across the name Parks’ jointweed while researching native Texas plants, you’ve discovered one of the Lone Star State’s botanical treasures—and one that’s probably not destined for your garden bed. Let me explain why this little annual ...

Rare plant alert!

Region: Conservation status by state

Status: S2: Status is uncertain but is somewhere between the following rankings: 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) ⚘

Parks’ Jointweed: A Rare Texas Native That’s Better Admired Than Grown

If you’ve stumbled across the name Parks’ jointweed while researching native Texas plants, you’ve discovered one of the Lone Star State’s botanical treasures—and one that’s probably not destined for your garden bed. Let me explain why this little annual deserves our respect and protection, even if it can’t grace our landscapes.

What is Parks’ Jointweed?

Parks’ jointweed (Polygonella parksii) is a native Texas annual that belongs to the buckwheat family. As a forb, it’s a non-woody herbaceous plant that completes its entire life cycle within a single growing season. Think of it as nature’s own seasonal visitor—here for a good time, not a long time, but making its brief appearance count in Texas’s diverse ecosystem.

Where You’ll Find This Elusive Native

Parks’ jointweed calls Texas home and only Texas. This endemic species has chosen the Lone Star State as its exclusive address, making it a true Texan through and through. However, don’t expect to bump into it on your next nature hike—this plant is incredibly rare.

The Reality Check: Why You Shouldn’t Plant Parks’ Jointweed

Here’s where I need to put on my serious botanist hat for a moment. Parks’ jointweed has a Global Conservation Status of S2, which translates to Imperiled. This means there are likely only 6 to 20 known populations left in the wild, with somewhere between 1,000 to 3,000 individual plants total. That’s not just rare—that’s every single plant matters rare.

For this reason, I strongly recommend against attempting to grow Parks’ jointweed in your garden, even if you could somehow obtain seeds or plants. Here’s why:

  • Removing any material from wild populations could harm already vulnerable communities
  • Commercial availability is essentially non-existent due to its rarity
  • Specific growing requirements are poorly understood, making cultivation success unlikely
  • Conservation efforts should focus on protecting existing wild populations

Better Alternatives for Your Native Garden

Instead of pursuing this botanical unicorn, consider these more readily available Texas native alternatives that can provide similar ecological benefits:

  • Wild buckwheat (Eriogonum annuum) – Another annual in the same family
  • Antelope horns (Asclepias asperula) – A native milkweed that supports pollinators
  • Prairie flax (Linum lewisii) – Delicate annual with blue flowers
  • Annual sunflower (Helianthus annuus) – Showy native that birds love

How You Can Help Parks’ Jointweed

While you can’t grow this rare beauty in your backyard, you can still be part of its conservation story:

  • Support native plant societies and botanical research in Texas
  • Participate in citizen science projects that document rare plants
  • Choose other native Texas plants for your garden to support local ecosystems
  • Spread awareness about the importance of protecting rare native species

The Bigger Picture

Parks’ jointweed serves as a reminder that not every native plant belongs in cultivation—sometimes the most loving thing we can do is leave them be. By focusing our gardening efforts on more common native species, we can create beautiful, ecologically valuable landscapes while allowing rare species like Parks’ jointweed the space and protection they need to survive.

Your garden can still be a native plant haven without featuring every rare species. Sometimes the best way to love a plant is to admire it from afar and work to protect the wild spaces where it naturally thrives.

Parks’ Jointweed

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Polygonales

Family

Polygonaceae Juss. - Buckwheat family

Genus

Polygonella Michx. - jointweed

Species

Polygonella parksii Cory - Parks' jointweed

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