Explore Plants

Share

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
    
 

Can't find the answer in our existing FAQs, submit a question to Mr. Smarty Plants.
Need help with plant identification, visit the plant identification page.

rate this answer
1 rating

Sunday - May 04, 2008

From: Silver Spring, MD
Region: Mid-Atlantic
Topic: Water Gardens, Herbs/Forbs
Title: The origin of Juncus effusus var. Big Twister
Answered by: Nan Hampton and Joe Marcus

QUESTION:

Juncus effusus, var. 'Big Twister' We're trying to figure out the nativity of this thing, and whether it is safe to plant in our very wet rain garden. Thank you for any assistance...

ANSWER:

Juncus effusus var. 'Big Twister' is really a cultivar of the North American native, Juncus effusus (common rush) and should be written as Juncus effusus 'Big Twister' without the "var.", the abbreviation for the more formal botanical variety. Apparently, the species occasionally produces spiral-stemmed individuals. Those have been propagated and are being sold in nurseries. You will also find them sometimes listed as Juncus effusus forma spiralis (or Juncus effusus f. spiralis or Juncus effusus 'Spiralis'). It’s usually referred to as corkscrew rush or, sometimes, spiral rush. As for it being "safe", it is a native so in that sense is certainly safe, but it will spread through its roots or stolons. If you don't want it taking over your wet area, you should plant it in submerged pots.

 

More Herbs/Forbs Questions

Plants for Liberty Hill TX in full sun
April 15, 2008 - We recently bought an acre of land in Liberty Hill, TX. We have a large planting area in the front that is devoid of any plant life. I would like to turn this into a semi shaded area with some annua...
view the full question and answer

Nativity of Bidens frondosa from Portland OR
September 16, 2012 - Is Bidens frondosa (Beggar's Tick) native to North America or is it introduced? If introduced, is it considered invasive?
view the full question and answer

Rubber (latex) in Balloon plant (Asclepias physocarpa)
February 09, 2008 - I need milkweed leaves that contain rubber. The common milkweed species Asclepias syriaca has rubber in it. Do the milkweed of Balloon plant milkweed (Asclepias physocarpa) contain rubber?
view the full question and answer

Propagation of endangered plant Texas trailing phlox from Carrollton TX
December 26, 2013 - 1. How many seeds does the Texas trailing phlox produce per season? 2. Can the seeds be taken from a living plant without hurting it? Thank You!
view the full question and answer

Resurrection plant not reviving.
February 04, 2009 - I have what might be a resurrection plant but it never turns green. When it is watered it opens up and turns from tan to dark brown. Is it just a different variety of resurrection plant or something...
view the full question and answer

Smarty Plants's Facebook profile Support the Wildflower Center by Donating Online or Becoming a Member today.

Mr. Smarty Plants wants you to be his Facebook friend. Click the Facebook icon to add yourself to Mr. Smarty Plants list of friends.