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 - June 28, 2010

From: California City, CA
Region: California
Topic: Non-Natives, Septic Systems, Grasses or Grass-like
Title: Non-native smoketree for California City, CA
Answered by: Barbara Medford

QUESTION:

I was wondering if you could tell me if it would be a good or bad idea to plant a Smoke Tree (most likely European) in the vicinity of a septic tank. We are looking for something which will provide a moderate amount of privacy, since we live in the middle of the desert, and have very few neighbors. We are also considering Cordylines as an scattered around the smoke tree. Any help that you would be able to provide would be greatly appreciated. Thanks in advance. Ian Kelly

ANSWER:

Sadly, you have presented Mr. Smarty Plants with several ideas he considers bad. First, you should never plant a woody plant, like a tree or shrub, over a septic system. Those woody roots underground are larger than the tree visible aboveground, and relentless in their progress. They can lift sidewalks, crack foundations and certainly play havoc with a septic system. Our recommendation for use over septic systems is always grasses native to the area. Their long fibrous roots will hold the soil, draw up some of the moisture in the septic lines, but will not interfere with them.

Our second version of a bad idea is to plant the European smoke tree, Cotinus coggyria, (from Floridata) which is native to southern Europe, central Asia and the Himalayas.  The Lady Bird Johnson Willdflower Center is dedicated to the growth, protection and propagation of plants native not only to North America, but to the area in which that plant is being grown. 

And, in spite of it being native to North America, we don't think it's a good idea to try to plant  Cotinus obovatus (American smoketree), in your location in the Fremont Valley of the Mojave Desert. Although both the native and non-native smoketrees are listed as being viable in USDA Hardiness Zones 5 to 8, and your area on the eastern border of Kern County is Zones 8a to 9b, it still is a long way from the nearest area where either of them is believed to grow. A few counties in Central Texas are shown on the USDA Plant Profile as having the American smoketree growing, that is as far west as they go. The European smoke tree grows in the East and north up into Canada.  

Both of these trees are relatively rare in trade and difficult to transplant. Since you should not plant it over your septic system anyway, why waste your time and effort over a tree that will probably not survive there?

From our Native Plant Image Gallery:


Cotinus obovatus

Cotinus obovatus

Cotinus obovatus

Cotinus obovatus

 

 

More Non-Natives Questions

Reference for native critical populations from York, PA
May 25, 2010 - I have recently read a naysayer of native gardening. He states that native garden plants usually do not have the critical population size to be self-perpetuating. He says that one could better help t...
view the full question and answer

Strange produce from non-native lemon seed in Houma LA
April 03, 2010 - I grow a lemon tree from a seed. I grafted it from the same tree a year or so later. It is 15 years old and it only produce one year. The question is, the year it produce, the fruit was a pink grap...
view the full question and answer

Transplanting non-native invasive chinaberry trees
July 21, 2008 - I know most folk think Chinaberry trees are only for digging up, but I say that here in the Hill Country during a drought, they are the greenest and purtiest tree around. I have some tall fifteen foo...
view the full question and answer

Problem With Vegetable Garden Soil
June 09, 2013 - We live in Liberty Hill on 25 acres and we are working to restore native grasses and plants. We are ardent supporters of the Wildflower center. I say this because my question is not "typical" of wh...
view the full question and answer

Does molasses make glutinous corn palatable from The Philippines
November 06, 2011 - What would be the effect of molasses in the growth of glutinous corn?? Does molasses make the plant palatable?
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