Butterfly farming is only one of the few businesses that is eco-friendly. To be able to establish such business one needs to plant trees and flowers that would attract or would serve as food for the butterfly.
Dome or Enclosure:
A big dome or enclosure is needed to start this business. This dome would encloses the trees and butterflies. It could be as simple as huge fishnet/mosquito net that will enclose the whole vicinity. The plant inside the dome is depends on the butterfly that one wants to breed. Every butterfly have a specific plant that it use as a host or use as their food.