I don't have a convenient source of any kind of manure unless I go around collecting deer, Canada goose, and dog manure from the lawn. I have used aged horse manure with great success, but I believe that it was more a matter of increasing the organic content of the soil than of the nutrients that were available. In "the old days," one could get bags of dehydrated manure in garden and feed stores. It even came in different flavors: cow, sheep, and chicken. My father used this kind to make manure tea for his vegetable plants. Why don't I see these products for sale anymore? Darryl "Dash" Geoghegan in Australia, whom some of you know, feeds his bulbs - especially crinums - with manure tea. And what is this stuff about "compost tea?" Dell SE PA USA, Zone 6/7