Four to control now
Foxgloves
Beautiful early summer co age favourites, but can take over if not curbed.
Oriental poppies
Can appear everywhere – keep in check if a colour scheme is compromised!
Aquilegia
Prolific, tough self-seeders that you’ll notice in every pot and border gap.
Valerian
The summer stalwart of everyone’s garden – good colour but an out-and-out weed.