Growing Things in Galvanized Tubs, etc.
I recently picked up a very large, old galvanized bathtub at a yard sale for $5. It is/was beat up but I thought right away that it would be something to plant stuff in so I didn't care that it had holes in it already. I did scrub it well, spray painted the outside with some white primer, drilled some extra holes in the bottom, dumped in a bag of rocks and then the potting soil (not dirt), and then added several different kinds of herbs I had in smaller pots. I was so proud of finally getting all that done! Then, my cousin's husband, a retired plumber, said something about galvinized metal containing zinc in the coating and that it might leach into the soil and eventually into the plants. He wondered if the herbs would be safe to use. Anyone know? I have done some google searching but didn't turn up anything about galvanized tubs not being good to grow vegetables in (or other edibles).