I have a Dawn Redwood Bonsai Forrest. 3 out of 4 mini trees are doing fine (2 are doing great, one is doing fine) but the forth (the smallest one) looks sort of bad. Its leaves are look sort of dry and I don't know what I can do about it.
When I received it, maybe 2 weeks ago, I had to repot it because one of the trees were nearly out of the soil and the soil was beyond horrible. So, I repotted it and the tallest tree that seemed like it was about to die started growing and seems much better. On the other side, the smallest tree seems sort of sick?
I try to expose them as much sun as possible because I do know they like full sunlight and the soil is easily drained, yet moist. Is there something else I could possible do? (I've attached some photos just to see the condition of the trees right now).