Remedy. Not restricted (at least in Texas). If you're wanting to kill small trees, foliar application works, but on larger trees, basal application is best. Will kill a hackberry quick.

What kills a hackberry tree?

Fill each hole with liquid glyphosate herbicide until the liquid is slightly below the top of the hole; the glyphosate will drain into the wood and ultimately kill the root structure of the hackberry tree.

Why are hackberry trees dying?

The browning of the hackberry (Celtis occidentalis) leaves is probably due to lace bugs. Lace bugs are sap feeding insects commonly found on the leaves of shade and ornamental trees in Iowa. ... Severe feeding may cause premature leaf drop, but healthy, well-established trees are not seriously harmed.