Posted: 15/10/2013 at 21:13
Rang them today. Got a lot of "You know you're living in a dictatorship, don't you?" but eventually got enough information out of him to learn how to apply it and that the garden centre probably had it. Homebase and B&Q don't list it on their websites, but local GC has it on the shelf. I'm still going to dig that pit and haul out a lot of dead root systems to deny it the resources, but at least the adjacent plants have had some help today.
Still tempted by that sweet bay, but with this approach I may not have to replace the whole hedge with it! The alternative would be something more of an "interest plant" as it's a smaller area (assuming I'm winning now). Big, bushy rose, perhaps, or something like that. I'd love to put a choisya in there, but it's on the north side of a 6' fence, and choisya likes its sunlight.
Time to check out large, shade-loving feature plants!