This session was held at Sam's house where we considered essential nutrients that are needed by plants and how we can source them naturally.  We also looked at what goes on inside a compost pile and observed some of the micro-organisms that are responsible for breaking down organic matter into those vital plant nutrients during the different composting phases:

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Participants were able to test the pH and measure the amount of organic matter in soil from their gardens to determine which nutrients may be limiting. They also made kitchen wormeries capable of converting food waste and cardboard into highly nutrious compost. 

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Compost nematodes seen through a microscope