From now on, you’ll start to find some saplings here and there in the game. A small tree can be dug out with a shovel (you can find it anywhere or craft it yourself). Then plant the sapling in your base, in Build Mode. You can place no more than 20 trees of each type. Oh and don’t be afraid, dear, raiders or other players will not be able to break or rob your precious sacred garden of saplings.
Last Day on Earth: Survival Game GUIDE