Planted this cedar last spring (2020) and now this year it has this yellowing on the one side. I'm thinking maybe it's sun damage because it's planted on the east side of my house and it gets the most sun during the day. Could be something else but not sure. Just wondering if it will grow out of it or if there is something I can do to help prevent this. It is planted on a pretty clay soil and it gets more extreme heat and cold because I live in Southern Ontario. So maybe it has to do with those conditions.