I heated two pans in the oven at 200 for an hour, one of the manure compost and the other of some old rotted hay from the outside of the bale. I repotted a house plant in a mix of the two...and now I have weed seeds sprouting up.
Maybe I'll try 225 for two hours? 200 should have been hot enough to kill everything. I don't know if the oven dial isn't accurate or if the middle of the pan is not reaching a high enough temperature.
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