Twist-Stem Spikerush: A Critically Rare California Native That Belongs in the Wild
Meet the twist-stem spikerush (Eleocharis torticulmis), one of California’s most endangered wetland plants. While you might be drawn to the idea of growing this unique native sedge, this is one plant that’s definitely better admired from afar – and here’s why.



What Makes This Plant Special (And Off-Limits)
The twist-stem spikerush is a perennial graminoid, meaning it’s a grass-like plant that belongs to the sedge family (Cyperaceae). Don’t let the grass-like description fool you though – sedges are quite different from true grasses, with their characteristic triangular stems and unique flower structures.
What makes this particular spikerush extraordinary isn’t just its twisted stems (hence the name), but its critically imperiled status. With a Global Conservation Status of S1, this species is hanging on by a thread, with typically fewer than 5 occurrences and less than 1,000 individual plants remaining in the wild.
Where You’ll Find It (If You’re Lucky)
This rare beauty calls California home and nowhere else in the United States. Its entire native range is confined to the Golden State, making it one of those special endemic species that exists nowhere else on Earth.
Why You Shouldn’t Grow It (Even Though You Might Want To)
Here’s the thing about critically imperiled plants – they need our protection, not our cultivation. The twist-stem spikerush has specific habitat requirements that are nearly impossible to replicate in home gardens, and any attempt to grow it could potentially harm wild populations if plants were collected from nature.
As an obligate wetland species, this spikerush almost always occurs in wetland environments. It requires very specific conditions that exist in California’s remaining pristine wetland habitats – conditions that are already under threat from development, climate change, and other human activities.
Better Alternatives for Your Native Garden
If you’re interested in growing native California sedges and rushes in your wetland garden or rain garden, consider these more common and garden-appropriate alternatives:
- Common spikerush (Eleocharis palustris) – more widespread and garden-suitable
- California bulrush (Schoenoplectus californicus) – excellent for larger water features
- Dagger-leaf rush (Juncus ensifolius) – beautiful in rain gardens
- Saltgrass (Distichlis spicata) – great for saline conditions
How You Can Help Instead
Rather than trying to grow twist-stem spikerush, here are meaningful ways to support this critically endangered species:
- Support wetland conservation organizations in California
- Advocate for protection of remaining wetland habitats
- Create habitat for more common native wetland species in your own garden
- Learn about and share information about California’s endangered plants
The Bigger Picture
The twist-stem spikerush serves as a reminder of how precious and fragile our native plant communities can be. While we can’t (and shouldn’t) bring this species into our gardens, we can use its story to inspire better stewardship of the native plants we can grow.
By choosing appropriate native alternatives and creating habitat for less endangered species, we’re still supporting biodiversity and creating beautiful, ecologically valuable landscapes. Sometimes the best way to love a plant is to leave it where it belongs – thriving in its natural habitat, however rare that might be.
So next time you’re planning your native plant garden, remember the twist-stem spikerush and let it inspire you to make thoughtful, conservation-minded choices. Your local ecosystem (and future generations) will thank you for it.