Native Plants
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.
Did you know you can access the Native Plant Information Network with your web-enabled smartphone?
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.
rate this answer
Thursday - November 18, 2010
From: Bellevue, WA
Region: Northwest
Topic: Pruning, Seasonal Tasks, Grasses or Grass-like
Title: Cutting Juncus effusus back from Bellevue WA
Answered by: Barbara Medford
QUESTION:
I read your posts about Juncus effusus and just have one follow-up question. When is the best time to cut them back to the ground - before winter or early spring? I live in the Pacific NW. I recently divided a large juncus (apparently wasn't supposed to until spring.) If it should survive, when is the appropriate time of year to cut it down to ground level to promote new growth? Thank you for your time.ANSWER:
Juncus effusus (Common rush) is native to Washington State, but King County is one of those areas with incredibly complex USDA Hardiness Zones, in this case ranging from Zones 6a to 8a. This USDA Plant Profile does not show this particular juncus as growing in King County, in the central eastern portion of Washington. However, these USDA maps are often out of date, and we believe the plant should be hardy in your garden.
From Floridata, we found this site on Juncus effusus, which does, indeed, indicate that the plant should be divided in Spring. However, with its underground rhizomes, it would probably take a lot more than premature division to kill it. Because you live in a mild climate, it really is only necessary to cut it back when it become unattractive, usually in the winter.
From our Native Plant Image Gallery:
More Pruning Questions
Cuttings from beautyberry from Stockport OH
May 22, 2014 - My beauty berry is starting a new growth about 2ft from main plant, can I dig this and part of the root without hurting the main part, if so, when?
view the full question and answer
How to remove plume from Yucca elephantipes in NJ?
August 02, 2011 - In Manahawkin, NJ, how do we cut plume (2" diameter) off 10' Yucca elephantipes?
view the full question and answer
Leggy purple coneflower
August 20, 2007 - Last year I planted purple coneflowers and this year when they bloomed they were extremely tall & leggy. I'd like next year to get them to be shorter and fuller. How do I do that & is it something ...
view the full question and answer
Survival of yucca plant mowed down in Oklahoma
April 15, 2009 - I have a yucca plant that came from a very old plant of my late father, and had transplanted it 6 years ago and it came back every year and bloomed. This morning I went outside and noticed my husband...
view the full question and answer
Conditions for wisteria bloom on Ontario, Canada
November 05, 2005 - I live in Ontario Canada, and about 4 years ago I bought a shrub which was called wisteria. I loved this bush when I visited a cousin out in British Columbia. The problem is it has no trouble growing ...
view the full question and answer
Support the Wildflower Center by Donating Online or Becoming a Member today. |