My daughter and wife and I have been doing field experiments and stewardship for years. We have experience in marking and treating honeysuckle. In late May of 2014 the three of us treated and paint marked about 250 honeysuckle shrubs with 17% Garlon4 in mineral oil. We had a control of 180 live shrubs. The photos below are from a few of our scientific escapades.
After that May basal bark treatment we returned in September and tallied our results. The painted stems made the tally easy. We had 100% death to the Garlon4 treated stems! This was true in all size classes from dinky to huge honeysuckle. We did not spray an excessive amount. All dead. We can exclaim that when honeysuckle are leafed out in the spring you will get excellent results treating them with basal bark herbicide at that time. It works!
Two more posts to go on basal bark.