I just found this forum and decided to let out a cry for help: Last week I bought a bonsai tree for the birthday of my brother (which is in 6 days) and somehow I can't manage to keep it.. bonsai-ing. When I bought it, the soil was so hard I thought it was a fake one (but it's not) so I figured it must've been really dry and a green-fingered friend told me to drown it in water until water comes out of the drainage holes (I don't know if I'm using the right words). Anyway: The leaves are starting to turn yellow and fall off, the soil is still rock hard and I think there is some white stuff on the soil (internet said it's mold). Help what am I doing wrong??
Quick edit: I only started the "drowning" method today so it's not over-watering (or it wasn't until now)