Rent Shop Volunteer Join

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

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

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 Container Gardens Questions

Native small tree or shrub for container in San Angelo, Texas
July 01, 2010 - We live in San Angelo TX and are looking for some type of a bush/tree that will grow in a pot in a shaded area..we would like something that would grow to be about 5-6 feel tall and be rather narrow.....
view the full question and answer

Native plants for poolside in Central Texas
August 21, 2010 - What native plants would your recommend for poolside landscaping, and poolside containers? Tons of sun and white limestone patio.. Thanks.
view the full question and answer

Bluebonnets in pots in New Caney, TX
April 25, 2009 - My mother in New Caney (Texas), would like to plant Bluebonnets in some lovely terra cotta containers on her porch (and will hopefully mail me some dried pressings of my beloved state flower). Other t...
view the full question and answer

Cedar sage not blooming in pots in Austin
September 14, 2012 - I have cedar sage (salvia roemeriana) in containers on a dappled-shade apartment patio in Austin, TX. This is their first season here, transplanted in May (it's now September). All the plants have be...
view the full question and answer

Container plants for Bucks County, PA
February 18, 2009 - I live in Bucks County, PA and I would like to have a garden, but do not have a green thumb. Which plants come back each year that survive in large pots. Are daisies also a good choice for my garden...
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.