Bug/Issue Wild trees in Greenhouse covered in snow

Here's a screenshot of it...I've placed 12 wild trees in my greenhouse late Fall (for tapping/outdoor space reasons) and the ones that aren't pine are snow covered. None of the trees are exactly mature, though, and I'll update this once I'm a few days in to see if it's simply cosmetic.

https://steamcommunity.com/sharedfiles/filedetails/?id=1438525045

Edit: It seems to be cosmetic. They still grow.

https://steamcommunity.com/id/sarysa/screenshot/963091938891922147