Bigtooth Maple with small bugs

Hello,

I have a Bigtooth Maple (Acer grandidentatum) that I purchased from a nursery Mid June this year. I didn't want to transplant it right away but noted that it was in a nursery pot which wasn't the best. So, I just pulled the tree out of the pot and dropped the rootball and soil into a larger pot with good soil to rest until Spring. Well I've been noticing the tips of the leaves browning before fall so I took a look at the surface of the soil. I dug around a little and noticed a bunch of small maggots or bugs crawling around.

I've treated with a bug repellant etc. I suspect that the nursery soil is too moist, so I tried watering a little less. What do you all suggest? I thought maybe puling the tree out of the pot, take care of the root trimming and treat with bug repellant to the roots directly, and pray it winters well.

Please advise...

It's best o just wait 'till spring to do any repotting -- especially as it has been repotted recently. Just let the soil dry out betwen watering. It will not need much water during the winter, anyway.