Something is eating my calla's leaves from the edges. The leaves are also full of round holes. What could cause this and how can I prevent it? I cannot see any bugs or worms on the leaves.
There's a good chance you have slugs or snails eating your callas. This article will help you with them: https://www.gardeningknowhow.com/plant-problems/pests/insects/kill-garden-slugs.htm
If this doesn't help, let us know, we'll think about what else might be troubling your plants.