Hi, use Masked Material and use DitherTemporalAA into the opacity mask (so multiply what you currently plug into opacity mask with this DitherTemporalAA). Set Random to 0 and the Alpha Threshold will be the Opacity of the tree. So when you want the tree to vanish, set the Alpha Threshold to 0, else set it to 1, and you can also gradually fade the tree out using a blueprint to drive the Alpha Threshold.
2 Likes