A supply of beast manure would be helpful around here.
I have an endless supply of horse manure, free for the taking if you want to come pick it up! You'll be doing me a favor!

I usually start composting some of it around Christmas time, and it's good and ready by spring to go in my raised-bed gardens.

But admittedly, while composted horse manure is decent, "goat seeds" make a better fertilizer. I've a friend who puts only goat manure in his garden, and that man can grow anything and make it look easy.