3. Pruning
There are a lot of flower varieties out there that won’t take well to regular pruning – in fact, many flower types are very notorious for not liking a trim, but this isn’t the case when it comes to petunias. When you’re working with petunias, it’s the type of flower that prefers rougher handling than say, roses, and they prefer much more regular pruning.
When flowers start to go limp on the plant, trim them off immediately. This helps to promote new flower growth for the petunias, and it ensures that no lost energy is spent on trying to regenerate flowers that have passed – instead, the energy goes straight to producing new flowers, which is part of the secret to making sure you have a great blooming petunia.
When pruning your plant, it also gives you an opportunity to examine the state of the rest of the garden and what needs to be watered, moved or composted.