hibiscus syriacus in container needs help
I have two hibiscus in containers right now. One is a tropical hibiscus (rosa sinesis) that is doing wonderfully and being pruned into a small tree. The other one is a deciduous hibiscus syriacus called "alba" that is not doing so well in a pot. I got it last year when it was about 6 inches tall. It is about a foot tall now but unhealthy. It barely flowered at all, so I repotted it in a larger pot and then it stopped flowering and the leaves turned yellow around the ends in springtime, during flowering season. I am aware that the leaves are supposed to fall off in the autumn. I was wondering if hibiscus syriacus is difficult to grow in pots. Would it be better off to plant it in the ground?