Horticulturalist Shares Which Garden Plants You Should Let Grow Or Kill

We’re all about biodiverse gardens here at HuffPost UK, and no-mow May is a great time to rewild your backyard. 

But sometimes, as is the case with invasive Japanese knotweed (which can cause structural damage to your home if not treated ASAP), certain plants are better off out of your yard.

So, we thought we’d ask the Royal Horticultural Society (RHS)’s chief horticulturalist, Guy Barter, about which ones you should banish on sight (and others you should keep a careful eye on, as well as the ones you should bear with).

1) Plants not to let grow in the first place 

“Some alliums, such as: 

• three-cornered ga...