Bacteria or other microorganisms thought of as one's "livestock", i.e. in the garden or, more commonly, in a compost pile or tumbler.
Johnny: Good afternoon; is Alfie here?
Carrie: She's out in the garden now, feeding the microherd some carrot peels.
Carrie: She's out in the garden now, feeding the microherd some carrot peels.
by JCEG November 20, 2006
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