I cut down a large laurel bush and a few Leylandii a month or so back to make way for a new shed (due mid Sept). We got some of the longer roots out but by no means all. The roots don't have to completely disappear but I don't want them growing again.
I drilled holes in the roots in which I've been regularly putting Epsom salts. The Leylandii seem to be dying in that the exposed stump has darkened quite a bit and there is no sign of new growth.
The laurel is just sprouting some new growth along the side of the root, though the exposed stump does look pretty dried out.
So is it time to try something else, if so glyphosphate seems the cheaper option (and doesn't neutralise the soil) whereas grinding will probably be upwards of £100 which I'd sooner not spend. Or I could plough on with the salts.
If I were to apply some glyphosphate this week would it reliably kill the roots, and how long would that take to see happening? That would leave me time to get the grinderman so long as I could see whether or not the roots were dying.
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