It's likely you've heard of Japanese knotweed. This invasive, rapidly spreading plant has roots that grow deep underground, causing widespread damage, including to building structures. It can also be tricky and expensive to get rid of.

Since it's classed as controlled waste, any parts of the plant must be disposed of at a licensed landfill site. It’s best to employ a specialised Japanese knotweed contractor and ensure that they are registered waste carriers. You can search for a local, vetted contractor using the Property Care Association database. Other invasive plants, such as Himalayan balsam and giant hogweed, may also be banned.

Tipping point: 14 items you can take to the dump (and 5 you can’t)