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

rate this answer

Sunday - February 03, 2008
From: Austin, TX
Region: Southwest
Topic: Deer Resistant
Title: Bur oak bark damage done by deer
Answered by: Barbara Medford
QUESTION:
Dear Mr. Smarty Plants: Just noticed that deer have been rubbing the bark on good sized, but young, bur oaks planted last spring. Mostly in one spot on one side of the trunk. Will this kill the tree? Is there something we can do to help with bark repair? Are deer attracted only to "young" bark . . . Particular kinds of trees? . . . Should we expect to wrap and protect even more mature trees? d.ANSWER:
We searched far and wide and found only offhand remarks about the kind of damage deer rubbing could do to oak bark. Most of the damage dealt with has to do with deer stunting or killing young trees by eating the budding tips of the branches. Since Quercus macrocopa, Bur oak, is relatively fast-growing, this would seem to be a problem solved by time. The same appears to be the case with the bark rubbing. As the tree grows older, the bark grows tougher and thicker, and the rubbing will not damage it. As long as the tree bark has not been "girdled" or cut all the way around, it won't kill the tree, but it won't do it any good, either, and insects or disease could invade through that opening in the bark. It doesn't appear that deer are particularly attracted to one tree over another, but just to whatever is vulnerable and in their path. We studied several "repellants" recommended by growers, but they all have to be replaced after a rain, and seem to be mostly for protecting young seedlings and tender stem tips.
We did find a couple of resources discussing tree wrapping, which apparently needs to be done for a year or so, until the tree gets big enough or tough enough to resist damage by deer and other beasties. The first is "Newly Planted Trees Need Protection" by John Begeman of the University of Arizona. From the University of Minnesota Forest Resources Extension Services comes this article on "Tree Stem Protection." Of course, if you are really having problems with deer in your garden, you may have to consider something like deer fencing, which is a whole other subject. You are the only one who can judge how valuable the trees are to you, how old they are, and thus how near to being big enough to withstand the deer assaults, and whether vigorous measures are called for.
More Deer Resistant Questions
Deer resistant plants for Toronto, Ontario
March 02, 2009 - What are the native trees and shrubs that are resistant to deer browsing and rubbing?
view the full question and answer
Deer-resistant shrubs for Michigan
January 28, 2009 - I live in deer country. I'm looking for shrubs that are attractive to birds but not to deer. Our soil is sandy. I have a part sun, part-shade situation. I live in zone 6, two miles east of Lake Michi...
view the full question and answer
Control for slugs and snails in Arisaema triphyllum
June 06, 2007 - I had a beautiful Jack In The Pulpit growing and something has eaten it. What can I do to help prevent that next year? I live in Northwestern PA.
view the full question and answer
Protection of redwoods from deer rutting
June 04, 2008 - We have a mountain home that we visit every other weekend. Are there any methods to protect redwoods from deer rutting that we can put in place since we are not there enough to spray repellent every f...
view the full question and answer
Determining best time to harvest deer grass seeds in California
September 06, 2006 - When is the best time to harvest deer grass seeds at about 4,000 feet in southern Riverside County California??
view the full question and answer
Support the Wildflower Center by Donating Online or Becoming a Member today. |