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 - July 07, 2009

From: Hilliard, OH
Region: Mid-Atlantic
Topic: Invasive Plants, Compost and Mulch, Propagation, Trees
Title: Eliminating suckers from roots of Moraine locust in Hilliard, OH
Answered by: Barbara Medford

QUESTION:

We removed a large Moraine Locust tree and also the stump. Now little trees from the roots are coming up. How do we get rid of these so something else can be planted?

ANSWER:

Moraine locust is apparently a patented selected cultivar of Gleditsia triacanthos (honeylocust). The cultivar lacks the thorns that are so vicious on the original plant, have smaller seed pods and therefore less mess on the ground. They are susceptible to several pests and diseases and can become a weed problem and invasive. Obviously, you already know that since you have had it cut down. Now to get rid of the suckers that are still coming up. They are the plant's last-ditch struggle to survive, which is every organism's primary purpose.  Those "little trees" coming off the roots are, in effect, branches the roots are putting out to get some leaves growing to manufacture food for the roots through photosynthesis. The roots are a storage area for nutrients and will continue to try to stay alive. Of course, you want to nip off those suckiers as soon as they stick their heads up. Eventually, if you got them all, the roots would starve, but this could take a while. 

So, take the battle to the root. Get a bottle of wide-spectrum herbicide and some disposable foam paintbrushes. Dig down to where you can get at the main root. Cut off a slice of that root, exposing a fresh surface. Quickly, within five minutes, before the tree can begin to heal itself, paint the raw surface with the herbicide. This should go down into the circulatory system of the root and begin to kill it. This will also take a while, depending on how much root there is. If you are really determined, you could dig down and locate some more roots going out from the main stump and treat them the same way. Be very careful with the herbicide, avoid spilling it on the ground and contaminating the soil, and don't use spray. A spray could easily stray onto another, more valuable plant, and cause more damage than you intended. Hopefully, this will stop the development of the suckers and permit you to begin planting in the fall. We would also suggest that you remove as much of the root from the ground as possible, and then work some compost into the bed before starting to put in new plants. 

 

More Compost and Mulch Questions

Proper watering of cedar elm trees in Sachse, TX
August 15, 2008 - I've just planted two Cedar elm trees in clay soil, each about four inches in diameter, and I want to water them correctly. I'm aware that too much water can be bad as well as too little water. I ...
view the full question and answer

Clay hill with erosion problems in Reedsport OR
July 10, 2009 - We have a very steep 35-40' clay hill subject to erosion in the Oregon rainy season. How or what do we do to get some kind of vegetation/grass, etc to grow without washing away? We have had mudslides...
view the full question and answer

Vine for pergola in Belton TX
February 06, 2013 - Hello, I would like to know what vine would be best to cover a rather large pergola. It will be in full sun in caliche soil. :( The area has access to a water hose and I would like to have something...
view the full question and answer

Removing grass under oak trees in Pflugerville TX
August 30, 2009 - I would like to use the newspaper-and-mulch method to smother grass under the canopy of live oaks, a bur oak, and a lacey oak so that I can plant natives that will thrive there. However, I'm concern...
view the full question and answer

Newly planted magnolia in Hedron NE
September 19, 2010 - We planted a Magnolia stellata 'Royal Star' in our landscape about 2 weeks ago. It is approx 7' tall. My question is should the leaves on it all be turning brown and crisp already or are doing some...
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