We have black locusts invading our black raspberry patch, as is well known, just cutting them doesn't really work long term. Has anyone had experience treating the cut stumps with Roundup or similar product?

The shoots in the garden are from 1/4 inch diameter to 1 1/2 inch diameter. the apparent parent tree is about 26 inch dbh and is only about 40 feet from the patch. Will the parent tree and others further away be in jeopardy?


Views: 120

Reply to This

Replies to This Discussion

Hi Tony

Cut stump treatment to the small stems should kill them.  It might however kill the parent tree 40 ft away also. I suggest either a dilute roundup (less than 10% active ingredient of glyphosate, and I’m guessing!) or a herbicide without glyphosate.  If you use glyphosate, you could try a 2% or 3% dilution and see if that controls the suckers. See if you can find Pathfinder II (www.arborchem.com) or anything with Triclopyr (Garlon family).  Triclopyr is less mobile than glyphosate, but still a bit mobile.

If you could avoid the raspberry, you could also spray the locust foliage as it sprouts from the cut stump.

The suckers are likely coming from the big tree.  I suspect this will be a persistent problem, but you can lessen the annual work by controlling these root suckers with herbicides. As you found cutting will only stimulate more suckers.  There is some risk of death to the parent tree, and that risk increases as you increase the surface area you treat at one time with glyphosate. The glyphosate will accumulate to the most actively growing portion of the tree which is likely the parent tree.

As a reminder, the May 20th webinar is on forest herbicides.  See more information here

http://www2.dnr.cornell.edu/ext/forestconnect/web.htm and on this site in the events.

I agree with Peter's advice.  2,4,D may be another readily-available and less-mobile herbicide that could be used (but I personally don’t like using it due to the volatility/smell).  You would also want to check to make sure that it's labeled for cut stump treatment on Black Locust.  We’re treating suckers here on the farm that continue to creep into areas where we don’t want them.  I cut them off with loping shears when ~ 1” in diameter and treat the cut surface. I haven’t noticed any flash kill yet on adjacent locust trees, but I’m not treating a large number of stems at any given time.  Annual follow-up seems to keep things in check. 



Story in Northern Woodlands Magazine on Deer Impacts

Started by Brett Chedzoy in Woodlot Management Aug 8. 0 Replies

This Spring we had an opportunity to speak with writer John Litvaitis about the big picture of deer impacts on the hardwood forests of the Northeast.  I posted the original story from the summer edition of Northern Woodlands to the…Continue

Ash blonding effect on lumber quality

Started by Jeff Joseph in Woodlot Management. Last reply by Jeff Joseph May 5. 2 Replies

Question: In Peter Smallidge's most recent "Ask a Professional" column for NYFOA's Forest Owner magazine he stated that some log buyers will reject ash that shows outward signs of "blonding" on the bark. Is this because the wood will change…Continue

The American Chestnut: A New Frontier in Gene Editing

Started by Brett Chedzoy in Woodlot Management May 2. 0 Replies

https://www.asbmb.org/asbmb-today/policy/042823/the-american-chestnutInteresting discussion the difference between efforts with the American Chestnut and other…Continue

Growing Black Locust for Pleasure and Profit

Started by Brett Chedzoy in Woodlot Management Apr 20. 0 Replies

In early March I was invited to present on the opportunities for growing black locust as a timber cash crop at the Rural Landowner Conference in Allegany County.  Ryan Trapani from the Catskill Forest Owners Association asked afterwards if I would…Continue

Recording links for Ruffed Grouse, American Woodcock and Wild Turkey webinars

Started by Brett Chedzoy in Woodlot Management Apr 11. 0 Replies

On March 29th and April 5th the Southern Finger Lakes Chapter of the NY Forest Owners Association and Audubon NY hosted virtual presentations by experts from the Ruffed Grouse Society, American Woodcock Society and National Wild Turkey Federation. …Continue

What Constitutes a Healthy Forest?

Started by Brett Chedzoy in Woodlot Management. Last reply by Diane Frances Mar 23. 3 Replies

In March, 2021, Peter and I had the opportunity to organize a day-long training for the annual Water Quality Symposium (annual conference of SWCD and NRCS professionals from around NY) titled: "Restoring Ecological and Productive Function to…Continue

Building slash wall with skid-steer

Started by James Gray in Woodlot Management. Last reply by James Gray Jan 19. 2 Replies

Hello everyone, looking for feedback on plan to build a slash wall with a skid steer and fork attachment.The timber harvest is at a nature center, clearcutting a red pine plantation (1 ac) and aspen stand (1 ac) and group selection on a oak stand…Continue



© 2023   Created by Peter Smallidge.   Powered by

Badges  |  Report an Issue  |  Terms of Service