Hello! I have just begun my journey into the bonsai world, and I was hoping someone might be able to help me out. I have taken a seed that was grown in my backyard and planted it, and have been caring for it since for the past 7 months. I was wondering when and if I need to repot my maple, and if anyonr had any additional comments on other things to consider, it would be much appreciated. Attached is a photo of the maple (appr. 5 inches) for reference. It isn't clear in the photo, but it has two large red leaves, two small red leaves, and three small green leaves.

There are no photo.

Repotting is done every 2-3 years on mature trees. Yours sounds like a young sapling, it can go without Repotting for at least 5 years, proboably a lot longer. However you can up pot to a bigger pot when the roots starts to fill up the pot.

I do hope it is inside for the picture only? This needs to be outside.
There is no need to repot. The pot is large enough for the time being.