Dahlia gall could be wreaking havoc on your garden plants – here's how to spot it, and what to do if your plants are infected

Closeup of pink dahlia flower growing in garden.

Ever heard of dahlia gall? I wouldn’t be surprised if you hadn’t – it’s not something I was familiar with before, either.

But since learning how to grow dahlias, I’ve stumbled across the term – and as it turns out, it’s quite a common dahlia problem.