https://mdc.mo.gov/trees-plants/problem-plant-control/invasive-plants/japanese-honeysuckle-control

https://cipwg.uconn.edu/japanese-honeysuckle/#

I think temps here will often fall to freezing at night and return all the way up into the 50's during the day where JHS can still photosynthesize. I noticed last year, in this timeframe a lot of other vegetation still looks green. If the others are basically dormant at that point I see no risk in trying this method.

Why spray foliage rather than cut to the ground and apply the herbicide to the fresh stump? You are no doubt planning to remove it once dead anyway, aren’t you? Less labor and less spray.

Its an older stand that was here before I moved in, so we're not talking about a few vines running up a tree. There are hundreds of vines coming up all over the place like a sod. I spent around 8 hours this winter, cumulatively, working my way along the back property line pulling it by hand, and when I got to the other side it was just at another level, from the back of the property up to the street.

Here's the epicenter of the vines, pic taken right before I got after some of it with a brush cutter. Now I want to spray all the runners and ground level vines. Theres also poison ivy, virginia creeper, wild grapes and who knows what else in there.

Skip-I know this is a little late to be posting, but methinks the proper time would be early spring, when the natives are all abed yet and the non-natives are greening up. Whack them down with 2-4-d or whatever. There will be no collateral damage that way.

I missed my late fall window anyway. At least now with the other vegetation going dormant the evergreen honeysuckle is sticking out like a sore thumb, the soil is wet, and its easy to pull. I hand pulled some of it the last couple weekends. I have all winter to get at the rest of it. Snow doesn't last long around here.