Dr. Russell Sharp tests unconventional, nutrient-free grow media for microgreens—hemp and microgreens matting, cardboard and coarse sawdust—comparing results for chia and onion in a hydroponic setup.

The episode covers the trial design, potential issues (mould, decomposition, nutrient deficiencies, wood toxins) and invites listener feedback as the team observes outcomes.

https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/