In article , Malcolm
writes
Roy Bailey wrote:
I have a large number of plum suckers growing up around the sites of
old trees that have been felled, and also many sycamore saplings too
big to dig out - all of which I wish to permanently remove.
Some years ago I was able to get a crystalline product which was
spread onto the stump immediately after cutting and which effectively
killed the whole thing, but this does not appear to be available any

Does anyone have any recommendations as to a suitable replacement?
It doesn't have to be organic, but the less toxic the better.
Roy.
Are you thinking of Root Out? AFAIK still available

That's the stuff. Ammonium sulphamate, also marketed as Deep Root and
Amcide.

But searches via Google seem to suggest that it was withdrawn from use
nearly a year ago, thanks to interference from the European Union, and
can only be used as a compost accelerator.

I can't think why, because Wikipedia states:

'Perhaps its best known use is as a safe, broad spectrum herbicide that
is particularly useful in controlling tough woody weeds, tree stumps and
brambles. Its extremely low toxicity to humans and animals makes it
ideal for both amateur home garden, professional and forestry uses. It
is considered the most environmentally friendly and one of the safest
weedkillers to use on plots of land that will be used for growing fruit
and vegetables intended for consumption. Once applied it is slowly
converted in the soil to the useful fertilizer ammonium sulfate
(ammonium sulphate).'

This seems daft. If it can be used as a compost accelerator, what is
wrong with using it to kill tree stumps?

Roy.
--
Roy Bailey
West Berkshire.