HELP! The leaves on my Althea (Rose of Sharon) are turning yellow.?

Question

I have 3 Rose of Sharons and in this past week the leaves of two of the plants adjacent to each other have turned a bright yellow all over the plant. The other one on the other side remains green and pretty. I am not overwatering them because for the most part they get water once a week if they are lucky. Is this a disease, fungus, insects? I don't want to lose them. I see no insects or chew damage.

Answer 1

Proper care is important, it could be that your plant is in too much light, or to little, Rose of Sharons need partial light and well drained soil. I don't know what this might be. Hum...