Behind my garage, someone planted 3 needle palm trees. Why I couldn't
tell you. (Long story...)
Any there is little sunlight there, and they stayed small/sickly looking
for eons... then they finally grew above the roof and took off like
skyrockets. They were by now way to big dig out, and would grow into
power lines if left be.
I cut off all the fronds, which reduced the stump height to about 4
feet. Man do they ever have long hard sharp needles! I thought I'd
probably killed them. Nope, they came back really aggressively.
Cut them back again, and sprinkled rock salt over all the cut ends, and
crotches... a good bit too, probably a couple of pounds. They laughed!
Cut them a third time, and had no idea what to do... but on a whim
sprinkled them down with with some old leftover DexronII ATF.
It stopped them cold in their tracks, absolutely zero grow back.
It didn't take a lot, just coated all the cut ends, and poured some into
all the up facing crotches. I kept it off the ground.
I'm not an Arborist, but have seen one played on TV. Above is presented
for what it's worth... so be safe, use common sense, good judgment and
as always; YMMV.
I haven't tried it but one of the old times here said a squirt of
muriatic acid will kill a palm. Drill a hole and shoot some in. It
screws up the pH in the tree and it dies pretty quick.
If you never ever want any palms again, grind up a ganoderma conk and
spread it around the base of the trees
Drill hole(s) @45deg to the vertical and pour in roundup.
Or (unless this is hidden sabotage of someone else's tree), ring bark
You still have the problem of getting it demolished and removed.
Depending on what sort of tree it is, it may sprout/sucker from the
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