Is it too late to repot JM in a larger container now? I have been using equal part Kellogg's compost, sand and peat based potting mix. My fireglow seems to be growing good but my other red Japanese maple doesn't seem to be happy. I am not sure if it's the soil or was stressed when I purchased it last spring and repotted it in a larger container.I have been tempted to put it in the ground lately. I think it's 3 years old. Is it ready to go in the ground? How often should I repot my fireglow in a container? every year or 2. I repotted my fireglow last year.