My Dearest Cherie, the Norway maple, sycamore or Acer pseudoplatanus is a pest everywhere it grows. It spreads everywhere here and takes out our Native trees, which is not good.
The seeds are like Helicopters and seem to grow wherever they land, even on cracks in the paving! In the spring I have an amazing thing for the seedlings and that is my Flamethrower! It is Gas powered and sends a small stream of very hot flame out, so you can cremates them and it sterilizes the soil just around them so it kills the roots. Unfortunately for circumstances out of my control, i am not allowed to use it at the moment, which is a blow to moral. Imagine Ed with one of these, what fun he could have! Cremates Dandelions and anything, great fun.
You should get him one and he could mount it on his mower, see a weed fry it!
Kindest Regards.
Neil.
p.s it is strange having my Garden on the Article.