Columnar Cactus Polaskia chichipeThe Polaskia is a columnar cactus with curved stems that looks like a tree. Its stems are blue green when the cactus is young and change to a green grey colour as the cactus ages. An eye catcher in your home. The flowers bloom in the spring and summer. This cactus is very easy to care for! This cactus likes bright spots and can also be placed in direct sunlight. Water lightly once or twice a week in the growing period from March to September. Water