Blood meal, bone meal and

Blood meal, bone meal and fish emulsion are just what they say they are: the remains of blood, bones and fish. The first two products come from cattle slaughterhouses, where bones and blood are dried, crushed and packaged for gardeners. Fish emulsion and other fish-based products are made from carcasses left over at fish-processing plants, though sometimes fish are caught specifically to be used as fertilizer.
Is Your Garden Vegetarian? / Alternatives to Blood Meal, Bone Meal and Fish Emulsion.
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