I bought my mint plant somewhere in January, but now I noticed the mint plant's stem are very long, and the leaves are slightly yellowish. The leaves are very fragile, and soft, not strong like they used to be. The plant also seem to be drooping slightly. What should I do?
From the stem length detail, I would conclude that it's lack of light. If it's inside, mint likes morning sun but the afternoon sun can dry it out in the pot. Make sure it stays moist if inside.