North America Non-native Plant

Forbestown Rush

Botanical name: Juncus cyperoides

USDA symbol: JUCY

Life cycle: perennial

Habit: grass

Native status: Non-native, reproduces and persists in the wild in the lower 48 states  

Forbestown Rush: A Mysterious Non-Native Species for Specialized Gardens If you’ve stumbled across the name Forbestown rush while researching plants for your garden, you’re likely scratching your head wondering what exactly this plant is. Don’t worry – you’re not alone! Juncus cyperoides, commonly known as Forbestown rush, is one of ...

Forbestown Rush: A Mysterious Non-Native Species for Specialized Gardens

If you’ve stumbled across the name Forbestown rush while researching plants for your garden, you’re likely scratching your head wondering what exactly this plant is. Don’t worry – you’re not alone! Juncus cyperoides, commonly known as Forbestown rush, is one of those enigmatic plants that doesn’t have a wealth of readily available information, making it a bit of a gardening mystery.

What Is Forbestown Rush?

Forbestown rush is a perennial, grass-like plant belonging to the rush family (Juncaceae). Like its rush relatives, this plant likely features the characteristic narrow, upright stems that give rushes their distinctive appearance. However, here’s where things get interesting (and a bit complicated) – this species has very limited documentation in horticultural literature.

The Non-Native Question

One important detail we do know: Forbestown rush is classified as a non-native species that has been introduced to certain areas and can reproduce spontaneously in the wild. Currently, it’s documented as growing in California, though its exact distribution and behavior patterns aren’t well-established.

Should You Plant It?

This is where things get tricky. With limited information about Forbestown rush’s growth habits, invasive potential, and ecological impact, it’s difficult to give a definitive recommendation. Here’s what we suggest:

  • Exercise caution due to its non-native status
  • Consider native alternatives first
  • If you’re determined to try it, monitor its behavior closely
  • Remove it immediately if it shows signs of aggressive spreading

Better Native Alternatives

Instead of taking a chance with this mysterious rush, consider these well-documented native alternatives:

  • Common rush (Juncus effusus) – Widely available and well-behaved
  • Baltic rush (Juncus balticus) – Excellent for wetland gardens
  • Soft rush (Juncus tenuis) – Adaptable to various conditions

If You Decide to Grow It

Should you choose to experiment with Forbestown rush despite the unknowns, here are some general guidelines based on typical rush requirements:

  • Provide consistently moist to wet soil conditions
  • Choose a location with full sun to partial shade
  • Ensure good drainage to prevent stagnant water
  • Monitor growth patterns and remove if spreading aggressively

The Bottom Line

Forbestown rush remains something of an enigma in the gardening world. While it might seem intriguing to grow something so mysterious, the responsible choice is usually to stick with well-documented native species that provide known benefits to local ecosystems. If you’re drawn to the rush family, there are plenty of native options that will give you similar aesthetic appeal without the uncertainty.

Remember, every garden is an opportunity to support local wildlife and maintain ecological balance. When in doubt, choose native – your local pollinators, birds, and other wildlife will thank you!

Forbestown Rush

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Juncales

Family

Juncaceae Juss. - Rush family

Genus

Juncus L. - rush

Species

Juncus cyperoides Laharpe - Forbestown rush

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