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
Monday - March 11, 2013
From: Washington, MO
Region: Midwest
Topic: Erosion Control, Trees
Title: Further explanation of retaining walls and trees from Washington MO
Answered by: Barbara Medford
QUESTION:
I had a question previously about putting retaining walls across the root system of a 40' tall bald cypress tree(not like spokes on a wheel, but concentric to tree trunk). How wide can the walls be? How deep can the dirt backfill behind the walls be? How far away from the trunk should the walls stay? I am only asking how to minimize stress to the tree, not how to engineer it. My choice of words gave you the wrong direction to proceed with your answer. Please address only the plant/tree issue for me.ANSWER:
Sorry we got so wrapped up in the rain garden issue we forgot the tree root issue. In fact, we had a reference to tree wells in our original answer and removed it because the answer got so long. For anyone interested in seeing how we goofed up, here is your previous Mr. Smarty Plants question.
Basically what you are asking about is Tree Wells. This article, we believe, actually addresses the questions you have, and much better than this mathematics-challenged gardener could. It has diagrams, a discussion of grade changes, the distance a wall should be from a tree trunk, weep holes, etc. Since you can actually see your tree, the incline and soil type, hopefully this will answer all the questions we did not.
More Trees Questions
Native trees for property in Washington State
September 29, 2008 - We bought a piece of property on Lake Wenatchee, Washington. It was cleared more than we would like and want to know what types of trees grow well there and can handle the snow. Should I wait until ...
view the full question and answer
Problems with non-native Canary Date Palms from Miami FL
December 06, 2011 - Hi: The fronts of my canary date palm, which I planted about 6 years ago, has been getting brown from the bottom of the tree and working itself towards the top for the past several months now. The b...
view the full question and answer
Plants Toxic to Horses
October 26, 2013 - I want to put planters on the front of my horse barn, which is also in the front field, so the horses could eat what is in it if they want to. I am looking to put a miniature pine tree in the planter....
view the full question and answer
Problems with Ashe juniper from Lakeway TX
May 25, 2013 - Dear Sir/Madam,
I have been living for the last three years in Lakeway, Texas approximately 20 miles west of Austin.
In my back garden there are several ashe junipers about 15-20ft tall. However...
view the full question and answer
A privacy hedge for NJ
April 16, 2011 - My backyard faces a highway in New Jersey. 18 years ago White Pines were planted for privacy, but they have since grown and now there is no privacy at all as the tree trucks are rather bare. Is ther...
view the full question and answer
Support the Wildflower Center by Donating Online or Becoming a Member today. |