Yellowing leaves on Hibiscus rosa-sinensis..
So I bought a lovely Tri-color braided Hibiscus maybe a month ago. It has been doing great, always has at least a 2-4 flowers on it at a time. I repotted it maybe 3 weeks ago because it looked like it hadn't been repotted in a long time and the mix was hard as a brick. It seemed to do well enough after this. Then in the past 5 days, it's started having yellow leaves. I swear more are yellow every day and it's not just old leaves, it's new baby leaves too. Nothing has really changed, it hasn't moved I water it as needed probably every 2-3 days. It gets direct sunlight from 1pm until sundown. I know that this isn't a cold hardy plant for my area--I was planning on overwintering it in our sunroom, btw.
Advice for me? I am very fond of this plant. :/