Hello this is my first post. A few months ago I purchased a small Spearmint plant. It's grown very quickly and became very bushy. Now it seems to be getting thin and some of the leaves are turning yellow and with brown spots. Is it because those leaves were not getting enough sun? Could it be something else? I haven't trimmed it at all because I wanted to let it get as large as possible before using the leaves next month. Should the yellow leaves be pulled off? When I want to use the leaves is it better to clip them off or just pull them off? Should I clip a few leaves from each stem or clip off a stem? If I clip a few leaves from a stem will that stem continue to produce more leaves? Going forward are there any suggestions or guidelines managing the plant or clipping it? Will healthy leaves stay green and remain for the life of the plant or do the leaves have a lifespan and at some point die and fall off? Thank you for any helpful information.