Crystal Growing Tree Kit- Maple Tree Shop Merci Milo $7.50 Default Title - $7.50 Quantity This product is currently sold out. Please fill in the form below if you'd like to be notified when it becomes available. Watch a festival of microcrystals grow and bloom before your eyes. The kit includes a paper tree form, a tray, terraforming solution and instructions. 3.5x2x7.5" box. D: 2.00.