In message , Natalie
writes
Last year I collected leaves, in black plastic bags, with some of the
school children I work with. When I had a look at one of the bags last
week I discovered the leaves hadn't composted at all!

producing leaf-mould is a different, anaerobic, slower process than
normal composting

What did I do wrong?

probably nothing - were the leave damp?

What should I do now?

probably just wait

--
dave @ stejonda

calculate your ecological footprint http://www.lead.org/leadnet/footprint/