Tree is a very important element in Little Alchemy, and it can be used to combine Wood, Forest, Fruit, Christmas Tree, Charcoal, and other trees. To make Tree, you need to make Plant and Time first, then it will be easy to create Tree. See the detailed instructions and try it yourself.
Air + Water = Rain
Rain + Earth = Plant
Earth + Fire = Lava
Air + Lava = Stone
Air + Stone = Sand
Fire + Sand = Glass
Sand + Glass = Time
Plant + Time = Tree