Could the bio-digester which is galvanized steel leach out zinc and be harmful to the garden soil?
In my last post I discussed a new method of worm composting mentioned in the Plano, Texas free online worm composting course. It is called a bio-digester and involves planting a small galvanized steel trash can into the soil about 3-6 inches. After I started to think about it I wondered if the chemicals from the steel would leach into the soil. Galvanized steel is made using zinc. I don’t want to put anything into my garden which could be harmful. A few years ago I wanted to build raised beds using treated lumber. I purchased the lumber and had it cut for the raised beds and then realized that the chemicals in the wood could leach out into the soil so I never used it.
After researching on the internet I found a site called www.finishing.com and a forum discussing the poisonous aspects of galvanized steel. Mostly there are questions from people who work with making galvanized steel but here and there I found questions about using it in the garden.
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