En EspaŅol
Share

Ask Mr. Smarty Plants

Mr. Smarty Plants - Freeze damage to salvias in Port Townsend WA

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
Not Yet Rated

Thursday - January 21, 2010

From: Port Townsend, WA
Region: Northwest
Topic: Herbs/Forbs
Title: Freeze damage to salvias in Port Townsend WA
Answered by: Barbara Medford

QUESTION:

Mr. Smarty Plants, We live in western Washington and had a multi-day hard freeze in December. Now, in mid-January, our salvia hot lips has no live leaves on it. The leaves that remain are green and dessicated. Do we prune it, and if so, how much, or do we wait to see if there is new growth on the existing branches? I've seen answers to questions regarding pruning this plant in Texas, but not in cooler areas.

ANSWER:

Don't feel that conditions are any different in terms of freeze-back of perennials. In Central Texas, we had the same conditions in January. You may already know what happened; actively growing plants still have water in their upper structure, particularly the leaves. A sudden hard freeze causes that water to expand, bursting cell walls in the leaves, and they quickly turn dark and look pathetic. What made this freeze worse was that it was earlier than we ordinarily expect these conditions, very sudden, temperatures went down very far, and remained below freezing for several hours. A gradual decrease in temperature over a period of time increases the ability of plants or plant parts to withstand cold temperatures. A sudden decrease in temperature in late fall or early winter usually results in more damage than the same low temperature in January or February.

 

There are 37 salvias in our Native Plant Database, and 3 native to Washington. None of those three, Salvia dorrii (purple sage), Salvia dorrii ssp. dorrii (purple sage) or Salvia dorrii ssp. dorrii var. incana (purple sage), has a red bloom, which we assume a plant called "Hot Lips" is. "Hot Lips" is probably a trade name assigned to some salvia not native to Washington or, more likely, a cultivar. Because of that, it does not appear in our Native Plant Database as native to Washington, but it probably has similar enough characteristics that we can generalize. 

Since we have always recommended cutting salvias back to about 6 in. after the first freeze, this would seem to be the time to do it. The reason we like to leave 6 inches of stalk above the ground is so you know where it is, and don't accidentally pull out the new sprouts in the Spring, believing they are weeds. It seems unlikely that this plant will suffer permanent damage. 

 

 

 

More Herbs/Forbs Questions

Effects of Hedysarum mackenzii from Pflugerville TX
May 08, 2013 - What are the effects of Hedysarum mackenzii?
view the full question and answer

Source for ground pine plants from Ligonier PA
December 21, 2012 - Where can I purchase "ground pine plants? I want to use them for erosion control.
view the full question and answer

Plants for hanging flower boxes from Austin
July 27, 2013 - I have two long flower boxes 17" x 15" x 25 feet long one on the north side of the apt and one on the south made of metal suspended about four feet from the ground. One will get the morning sun and ...
view the full question and answer

Native plants to preserve soil on river bank
May 28, 2006 - I live in eastern Massachusetts. We have a small stream in our backyard and a woodland area on the other side. Japanese Knotweed is pretty well established on the opposite bank of the stream from our ...
view the full question and answer

Plants that will grow on the Connecticut coast
June 08, 2010 - I live on the coast in Connecticut and have a hard time growing plants here. I live about 1/2 mile from the beach and find that my soil is very rocky. The only plants that have done well in my yard ...
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