I will guarantee the trees for the first three months. I will send replacements for free, but I may ask for a photo or some sort of proof the tree did not grow. Most of the time every tree grows, and grows very rapid and healthy. But once in a while a cutting decides it just is not going to root out and grow. Once growing, they should continue to grow for 70 or so years. I also send a few extras for free to use for replacements only! I do this to prevent only having one tree not grow and having to mail just one replacement tree. Any extras send, please plant separate to use as replacement only.