Here’s a question we’ve been thinking about: why compost manure? It’s one of those questions we felt we knew the answer to — and we did — but that a reconsideration brought up all the variables and exceptions we’ve either learned from experts or from our own hard experience. So let’s deconstruct. Does all manure need to be composted before being used in the garden? If so, what’s the best ways to compost it? And finally, what about chickens?
We bring that last bit up because more and more people, both in the country and in cities, are keeping chickens. And chickens, er, emit some of the richest manure a gardener could hope for, high in nitrogen and phosphorous and full of other nutrients. Best is the fact that a chicken’ digestive system kills weed seeds — 98%! — that might otherwise be spread to the garden. Fresh chicken manure needs to be composted because it contains so much nitrogen that it will discourage germination of many vegetable seeds and burn young seedlings. Which ones? Ironically, it’s those that require a lot of nitrogen later on as they grow. (more…)