This one has a bit of a reputation, and honestly, it’s earned it. On the surface, it looks harmless enough, bamboo-like stems, clusters of small white flowers. Underground, though, it’s a different story. Its roots are relentless, strong enough to push through concrete, tarmac, and even building foundations if there’s a gap to exploit. And here’s the really frustrating part: leave even a tiny scrap of root in the soil, and it’ll grow right back. In some countries, it’s such a known problem that it can actually complicate selling a house or getting a mortgage approved.