En EspaŅol

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
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

Tuesday - February 10, 2009

From: Portland, OR
Region: Northwest
Topic: Invasive Plants, Trees
Title: Walnut tree root coming through basement floor in Portland, OR
Answered by: Barbara Medford

QUESTION:

I have a walnut tree root coming through my basement floor. I need advice as to what will it do to tree when I remove the root, like another root though a different part of my home. It is a large tree that has been here for thirty years, and the root came up within the last 3-5 years (didn't notice till huge split in floor). The tree had a hard pruning probably about the same time. I really want to keep the tree but am afraid of killing it when we cut the root.

ANSWER:

We're really sorry, but we think you're going to have to choose between the tree and the house. Cutting off that root coming through your basement floor will not only probably not kill the tree, but will inspire it to put out fresh roots. And you're telling us this is the second time the roots have invaded your house? This is undermining your foundation, inviting the incursion of termites and rodents, permitting the development of mildew and can only lead to structural damage. You didn't say which was older, the tree or the house, but the tree was planted too close to the house or the house built too close to the tree; either way, one is going to have to go. Tree roots can extend three times the height of the tree, and are relentless in their search for water and nutrients. You should get a licensed, certified arborist to supervise the removal of the tree and then have a structural engineer examine your house to see how much damage has been done and what is needed to correct it.

 

More Invasive Plants Questions

Are Wandering Jew plants poisonous from Boca Raton FL?
September 21, 2010 - Are wandering jew plants poisonous? I'd like to put some in my pond which has goldfish in it. Thanks
view the full question and answer

Passionflower Vine for Boulder
March 02, 2013 - I would love to have a passionflower vine growing up an arbor. I have read comments online that indicate: 1. I can grow some types of passionflowers in Colorado. 2. The plants can become very invasiv...
view the full question and answer

Controlling Thermopsis rhombifolia (buffalo bean) in Mozambique
May 19, 2009 - Dear Mr. Smarty, Please,can you assist. We have a plot on a dam in Mozambique. It has been invaded with Thermopsis rhombifolia (we call it buffalo bean), it is very hardy and if you fall in it or j...
view the full question and answer

Removal of invasive non-native Chinese wisteria
September 10, 2007 - I am going to be removing my ubiquitous chinese wisteria very soon (the method I'm going to use is undetermined). If I decide to use Round-up on the cut-stem (which may take more than one application...
view the full question and answer

How to deal with suckers on Flame-leaf Sumac
May 20, 2013 - Hi! It seems you can have too much of a good thing! Our flameleaf sumac is taking over our yard. There are multiple shoots appearing in our flower beds and in the lawn. How do I get rid of the unwante...
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