I was thrilled to see little green mandarins starting to form on my Calamondin bonsai, but now they keep falling off and I don't know if it's too much water or something else entirely.

After a few tries, I think I've figured out why my bonsai apple tree, a Malus 'Evereste', isn't fruiting. Could it be too much fertilizer? I'm worried it might be affecting the blooms, which should turn into apples.

My tiny Malus 'Appalachian' is looking a bit droopy this July. I water it every day, but should I be feeding it something specific to help it through these hot months?