Do you think it is better to use horizontal breeding box or vertical breeding box for peony?

Vertical culture boxes are relatively better, but they all have advantages and disadvantages.

For example: breeding parrots.

Vertical breeding box parrots are not easy to pick out sawdust, and birds are not easy to make eight characters, but vertical female birds will be very tired when they climb up and down. Female birds in horizontal breeding boxes are easy to pick out sawdust, birds are easy to form a figure of eight, and birds may climb out, but they can't go back to their nests.