Killing roots

[caroline7758]

I hae a pjygelius (cape figwort) which used to be my favourite plant but has now gone rampant and grown up through paving and behind some gas pipes next to a wall. What is the best way to kill it off as we can't get at it to dig it up? We've lifted the flagstones but obviously can't move the pipes!

[caroline7758]

[saddad]

Napalm would be out of order as well.... near a gas pipe!  ;D

I like Amcide... drill holes into the stump vertically and half fill with Amcide, works best when the plant is "fresh"...
:)

[caroline7758]

There isn't really a stump, just lots of stems, up to about 1/2 inch wide. We've chopped them down to ground level but need to make sure they don't shoot up again!

[saddad]

Can you peel back enough bark to get some between.... it works best in contact with the growing wood...  :-\