Thanks for asking! Surely you can't wait to get some new clothes for your cute plant friend! Please note that special pots are only available at certain times of the year via limited-time promotions.
For example, during Christmas if you go to the app's shop you'll find a special chimney-shaped pot. Use clovers to unlock the pot, or participate in one of our promotions to get it for free! Keep an eye out in the shop regularly so you don't miss the chance to get your own special pot!