Hi Annker
Don’t worry too much, I was only asking because I mostly hear about hoglets not hibernating, rather than adults.
Yes, buddleias can spread their seeds around, but they’re easy enough to pull up if you don’t want them where they fall. But lucky neighbours, they might get a free buddleia! Native butterflies love them, it’s just that their catterpillars need other species of plant to eat. i.e. a few lay their eggs on nettles, but others on smaller plants like birds food trefoil, etc. birds foot trefoil are pretty and fairly low growing, but easy to grow in a garden. Yellow flowers with sometimes red patches – hence one of their common names eggs and bacon! They will scramble up through things a bit.
