The tree that
fought back.

She'd already done the homework.

Most Tree-of-Heaven calls start with a stump and a question: "Why does it keep coming back?" This one didn't. The homeowner — a photographer who raises native silk moths in her yard — had read enough to know the two things nearly everyone gets wrong.

"I know that I can't simply cut them down but need to poison the trees first. I've read about the 'hack and squirt' method but I am uncomfortable doing this myself. Would you have interest in helping?"

— Kate, first contact · May 10

She was right on both counts. You can't just cut a Tree-of-Heaven down — cut it, and it fights back harder. And hack-and-squirt is not a DIY project: the herbicide is the easy part, but the sequence and timing that keep it from backfiring are not.

I know this species. I'd been living on the family apple-cider winery in Pennsylvania, twenty minutes from Penn State — the lab that leads the nation's Spotted Lanternfly research, because that state's vineyards and orchards are the ones on the line. I read the research, and then some. The advice on Tree-of-Heaven genuinely conflicts, and the way through is to weight the sources living closest to the problem — the ones with real resources dedicated to it.

I was also straight with Kate about one thing: this was my first full Tree-of-Heaven eradication. What I brought wasn't a stack of prior jobs — it was the method, understood down to the sequence, and the discipline to run it exactly right the first time. With this species that counts for more than a tally: plenty of crews have done a dozen and still work the tree in the wrong order.

Kill the roots first. Cut last.

The old protocol — cut it down, treat the stump — is exactly backwards for this species. Cut a Tree-of-Heaven while it's growing and you trigger the clonal response: the roots read it as an emergency and throw up dozens of new suckers. The lead labs out east, where the lanternfly arrived first, point the other way. Treat the standing network, let it carry the herbicide down into the roots, then remove it in dormancy.

Respect the chemistry.

A brutal heat streak settled in the week of treatment. The chemistry works best applied under 85°F, so one full day became two — both starting at first light, 7 AM the first day and 7:30 the next, to work the cool morning hours before the heat climbed. Weather is the driver.

Here's the nuance the how-to videos skip. Search this work and all you hear is two words — hack and squirt — as if that were the whole job. It isn't. Hack-and-squirt is one method, on one stem, saved for last. The real skill is the sequence, and one rule governs it: the father stem goes last. It's the network's largest conduit — finish there, and its downward pull draws the dose through the connected stems and into the shared root system. Treat it first and you can wound that main pathway before the rest of the tree is dosed. Everything else — the smaller woody stems, the suckers, the honeysuckle — is sequenced ahead of it, in practice grouped by treatment method as much as by position.

In practice, the method set the order as much as the map. Day one: the ten woody stems — several crowded right up against the father — plus the suckers nearest her native plantings, all by basal-bark and direct wipe. Day two: the sucker mass and the bush honeysuckle laced through the fence line — and last of all, the hack-and-squirt into the father stem, the herbicide placed straight into the tree's own plumbing. The father stands dead-center in the network, and it was still the final stem treated. Every application went directly onto the target stem — no broadcast spraying, no drift.

A field lesson the research papers don't teach: the hack is the hard part. The father stem stood wedged in suckers that had to stay standing and couldn't take a nick, and Tree-of-Heaven bark is thin, papery, slick — nothing like the ridged bark a hatchet bites into. The cuts have to land evenly spaced all the way around the trunk without ever connecting, because girdling it triggers the same emergency response as felling it. Precise hatchet work with four inches of swing room is its own skill. I earned it on this tree.

And the squirt matters as much as the hack. Search this and you'll see a squeeze-trigger spray bottle — fine on an open stump, useless here. The target isn't the trunk; it's the inside of each fresh cut, a slot a few millimeters wide, on a father stem wedged in suckers that couldn't take a drop of overspray. You can't aim a spray bottle into that. So every dose went in by hand, placed cut by cut, precisely where it belonged and nowhere else — a small amount of chemistry, delivered exactly on target.

One fair question: if cutting sets off the suckering, why didn't the hacking? The difference is what the tree loses. A mow or a fell strips the canopy while the roots are alive and loaded — that's the signal that wakes the dormant root buds. Hack-and-squirt takes almost nothing off the top: the canopy stays standing, and the herbicide riding down the stem kills those root buds instead of releasing them. It's the same logic that puts removal months out, in dormancy — by then the roots are already dead, so the cut that would have set off an explosion in June does nothing in November.

The real deliverable isn't a dead tree. It's the record.

Most Tree-of-Heaven jobs end with a stump and a receipt. This one ends with something that lasts: a chart. Every stem Kate and I flagged, every application logged to Ohio Department of Agriculture spec, and every season still ahead, kept in one place for the years an eradication actually takes.

The field log above isn't a page I hand-edit. It's a live view of this tree's record in ArbKeep, the health record for trees — a chart per tree, for its whole life, that follows the property to whoever owns it next. I'm an arborist who also writes software, and I built it for exactly this.