Click the Flag. Sometimes only one sole tree would be created, sometimes a whole forrest. But it would never come again so be careful; just like a real forrest.
Picture Source: https://commons.wikimedia.org/wiki/File:Pear_Leaf.jpg By: https://commons.wikimedia.org/wiki/File:Pear_Leaf.jpg adding some random to the cretional part - so the tree would look more naturally.
