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

Thursday - January 14, 2010

From: Hudson, FL
Region: Southeast
Topic: Invasive Plants
Title: Will Arborvitae (Thuja occidentalis) roots cause problems in a leach field?
Answered by: Nan Hampton

QUESTION:

A new neighbor is concerned my Arbovitae's root system will go into his leach field. His house has been there also for the same amount of time as the tree and the field. The tree is 45 years old. Do I have to worry?

ANSWER:

Well, I think if your house and your neighbor's house with its leach field have been there for the 45 years that your  Thuja occidentalis (arborvitae) has been growing and there hasn't been a problem so far, then there isn't likely to be a problem.  Virginia Cooperative Extension has an article, Planting on Your Septic Drain Field, that gives guidelines about distances for planting trees from leach lines.  The article classifies several trees according to their aggressiveness for invading a drain field.  Unfortunately, arborvitae isn't one of the species listed, but I couldn't find any indication that arborvitae is considered to have particularly invasive roots.  The article recommends a distance of 25 to 60 or 70 feet from the leach field depending on the aggressiveness of the tree.  If your arborvitae is closer than 25 feet to your neighbor's field and he is exceptionally worried about its roots invading, you should suggest that he put in a root barrier (see the Virginia Cooperative Extension article above) between his field and your tree.

 

More Invasive Plants Questions

Plants for north side from Dale TX
February 10, 2012 - What native trees and bushes can I plant on the north side of house? Can I use corn meal( I NEED FIGHT A GRASS) in flowerbed and then plant native wildlife seeds(FLOWERS)?
view the full question and answer

Killing oak sprouts from El Paso TX
August 16, 2011 - I want to know how to kill oak root sprouts and seedlings. Very dense and out-of-control in huge area of front lawn. I had tree cut down and I still cannot get rid of them. They're only getting wors...
view the full question and answer

Eradicating sumac in Burnet, TX
February 05, 2009 - I have several varieties of sumac on my property. I need to know how to get rid of it. When I cut it down it seems to come back in force.
view the full question and answer

Is Gooseneck native from Cleveland Heights OH
July 20, 2012 - I live in Cleveland Heights, OH, and have an abundance of gooseneck in my yard. Is it a native plant? Thank you!
view the full question and answer

Problem with Chinese Pistache tree
September 01, 2014 - We have a gorgeous Chinese Pistache in our yard, about 25 feet tall. We bought it for its gorgeous fall color. The problem is that it has never turned color for us. All the other pistaches in the neig...
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