Knotweed and a New House.
Discussion
battered said:
I imagine that it propagates itself the same as any other plant. Seeds, spreading roots, bits of plant getting knocked off and transported on moving trains. Railway lines are minimally maintained so anything vigorous will spread like hell. Look at the way brambles take over something like a railway embankment.
I believe the seeds are infertile and it spreads by roots and physical transport of matterGassing Station | Homes, Gardens and DIY | Top of Page | What's New | My Stuff