Homemade fertilizer

[BlakeeBoo]

I live in an area were it is hard to get good quality orchid fertilizer locally. Is there anything that i can use to supplement the things my orchids need. Like how you can plant a banana peel under a rose bush for the potassium. Obviously i would never plant a banana peel under an orchid for fear of rotting but you get the idea. My main concerns are phals and dendrobiums.