Homeowners are being warned about 27 invasive plant species that could wreck havoc if left to spread in the garden ...

Others on the list include giant rhubarb, a plant from South America – also known as Gunnera – which has been found to spread rapidly and choke native flora. The UK government enacted a ban on giant ...

The biggest plant invaders of UK gardens include: Giant rhubarb (Gunnera tinctoria), Curly waterweed (Lagarosiphon major), Floating pennywort (Hydrocotyle ranunculoides), Giant hogweed (Heracleum ...