And, if you’re unlucky, that might just happen – at first. But there’s a good reason why. Often, spraying to deal with pests kills the predators too. When you stop the treatment, back come the aphids. Their ladybird and lacewing predators, whose breeding cycle is a lot longer, are much slower to return.

So stick with it. Plant and sculpt your garden to have as much variety as possible, and within a few months no one species will be able to get out of control. The more complex and varied your garden is, the more resilient it becomes. In the end you’ll wonder why you ever needed chemicals in the first place. And your garden will, for the first time, literally hum with life.