Hi All
Recently moved here and have a Pyracanthus growing UNDER some decking, thence out into the garden. It was obviously never planted there (who would be so stupid?), but is a sport. Its main stems are just about 8 inches in, under the decking, are old and gnarled, and impossible to dig out. I have cut it right back to about 4 inches, and know it will come again. Can't dig, so what will kill it. Would covering up the remains in black polythene prevent regrowth. Thanks for any suggestions at all. (And though it made a nice bush, it was pushing the decking apart.) Have never knowingly killed off a growing shrub before and it pains me to have to write this.
Caro