En EspaŅol

Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

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
    
 
See a list of all Smarty Plants questions
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
3 ratings

Thursday - October 23, 2008

From: Great Neck , NY
Region: Northeast
Topic: Container Gardens, Water Gardens, Herbs/Forbs
Title: Overwintering a Juncus effusus in Great Neck, NY
Answered by: Barbara Medford

QUESTION:

Can I over winter a juncus effusus spiralis indoors or must it be kept outdoors? Whether indoors or outdoors, what is the proper way to keep it alive during the winter months?

ANSWER:

Juncus effusus (common rush) is native to New York and is hardy from USDA Zones 4 to 10. It appears that Great Neck, New York is in Zones 6b to 7a, so the plant should certainly survive outside. Juncus effusus 'Spiralis' is a selection for horticultural use, low growing with strongly spiraling stems. According to this Floridata article on Juncus effusus, it is really better to allow the plant to freeze back, remaining outdoors during the winter, because the stems (there are no leaves) will come back much stronger and better-looking. In milder climates (such as indoors) the stems will get brown and less attractive-looking, and will need to be trimmed. However, this page from Blue Stem Nursery on Lesser Corkscrew Rush refers to it as a plant that can be kept in a terra cotta pot and double as a winter houseplant. We would imagine the soil in the pot would need to be kept pretty moist, but we did see a number of illustrations of the plant in pots and indoors. 

Pictures of Juncus effusus 'Spiralis'

 

More Water Gardens Questions

Tradescantia as a water plant
June 13, 2007 - I have a spiderwort plant, and when I found it at the nursery, it was in water by the pond plants, (I had no idea what kind of plant it was at the time) So I bought it, took it home, and repotted it w...
view the full question and answer

Plants for a pond edge in IN
June 08, 2012 - Hello, I live in Southern Indiana. I care very much about reinforcing native plants for my region & not planting anything invasive. I had a pond built last year & need some suggestions for native ...
view the full question and answer

Wetland Plants for Michigan
March 20, 2010 - I have an area on my wooded property with a wetland marsh area that often puddles with water along the perimeter in the spring. It is very shaded and wet but I wanted to camouflage the perimeter of t...
view the full question and answer

Companion plants for irises
April 22, 2007 - Hello...what do you suggest as a companion plant for irises? I live in the Texas Hill Country. Thanks.
view the full question and answer

Plant for a salt water pool in Australia
September 27, 2011 - What plant is a perfect plant for small areas around a salt water pool?
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.
E-NEWSLETTER | BECOME A MEMBER | DONATE NOW | MEDIA | SITEMAP
© 2014 Lady Bird Johnson Wildflower Center