I have a plant thats only about 5 days old that already shows some yellowing in one of its leaves. Im using basic miracle gro potting soil. The bag says it feeds for up to 6 months. anyone know what could cause the yellowing this early in the game? sorry for not taking a picture. I've got the plant stashed in an area that allows me to check on it only during the night hours, and I can't use a camera without drawing attention.