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

Monday - May 20, 2013

From: Killen, AL
Region: Southeast
Topic: Non-Natives, Septic Systems, Shrubs, Trees
Title: Shrubs and trees over septic tank in Killen AL
Answered by: Barbara Medford

QUESTION:

Our church has 5year old blue rug juniper, a crape myrtle and two shrubs I can't identify planted over the septic tank which is surrounded with concrete and asphalt. I am afraid these will cause a problem with the septic system. Should I recommend we remove them and plant something else?

ANSWER:

This is really a plumbing problem, not a plant problem. We will tell you what we know about the plants you know the name of and then see if we can find some information on the septic tank issue.

'Blue Rug' Juniper is apparently a trade name for Juniperus horizontalis (Creeping juniper), which is native to North America but, according to this USDA Plant Profile Map is not native in any of the southern or western states, including Alabama. Lagerstroemia indica (Crape Myrtle) is native to Korea, China and Japan.

Now, on to the septic tank:

From a previous Mr. Smarty Plants answer:

"This article from InspectAPedia.com Guide to Planting Trees or Shrubs Over or Near Septic System Components has a lot of information on planting trees and shrubs over septic fields (don't) or distances from those fields to plant trees (you don't have that much space).

Beyond that information, about all we can tell you is what we have told others who wanted to know what they could plant over septic systems and let you go from there. These are all Mr. Smarty Plants answers to previous questions and some have more links for information. These involve different areas of the country and different plants but all are applicable to your question.

June 28, 2010 Planting over septic tank in California

September 2, 2009 Native flowers from Door County WI

January 25, 2009 Plants that will not clog lateral lines with roots from Bulverde, TX

April 10, 2008 Native plants for septic field from Austin, TX"

Please follow any additional links in any of those linked answers. We would suggest you have someone who specializes in septic tank installation visit the site and make recommendations. Damage may already have been done and the sooner you find out about it, the sooner it can be fixed and the less damage will be done.

 

 

More Shrubs Questions

Rose care for Austin
August 18, 2013 - I am a transplant from the Pacific NW and need to relearn rose care for Austin. When is the best time to cut back the roses, or do I even bother? I also need to find out how far back I can trimming a...
view the full question and answer

Need a privacy screen of native plants for swimming pool in Garden Ridge, TX
February 10, 2013 - We are building a pool and would like to use native plants as a screen around the fence, preferably a shrub that grows quickly to about 6 feet. Any suggestions? Thanks.
view the full question and answer

Non-blooming Tecoma stans in Fredericksburg, TX
June 30, 2008 - We have an esperanza plant purchased last year from Walmart and planted outside before winter. It flowered excellently last year. Just before winter we cut it back to about a foot. So far this summer ...
view the full question and answer

Native small tree or shrub for container in San Angelo, Texas
July 01, 2010 - We live in San Angelo TX and are looking for some type of a bush/tree that will grow in a pot in a shaded area..we would like something that would grow to be about 5-6 feel tall and be rather narrow.....
view the full question and answer

Non-native eleagnus from Jesup GA
January 17, 2014 - An elderly farmer has told me about a plant called Alley Agnes, but I can't find any plant by this name anywhere. He doesn't know another name for it, says it's what everyone has always called it i...
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 | STAFF
© 2015 Lady Bird Johnson Wildflower Center