The Chelsea chop is a nifty technique that helps control the size, shape and flowering time of certain summer-flowering plants – and May is the perfect time to do it.
By carrying out the Chelsea chop on your plants, you'll also encourage the production of more flowers. After you've cut back your plants, make sure you give them a thorough watering and some feed. Here's how to do the Chelsea chop.
Discover 11 plants to Chelsea chop, below.