I am growing mint in a large long container with oregano and chives. I am also new to gardening. The oregano is flourishing, the chives would be fine if my cat would stop eating them, but the mint doesn't seem to be doing so hot.
Some leaves are turning yellow and falling off. It started with the bottom leaves, but now several leaves at the top of the plant are getting yellow around the edges.
Is it due to a lack of water? Too much water? Disease? It doesn't appear to have rust.