"Uncle Marvo" wrote
I'm not sure that's true of all leylandi even. I was dealing with two
at the weekend with a chainsaw, one greens up and one doesn't. I'll
find out what exact varieties they are.

The one that regrows might be a Thuja of some kind. They're often used
for hedging because you can cut them harder back than Leylandii and
they'll regrow.

--
Sue