Container Gardening - Use of Plastics
plastic containers which are suitable for container gardening
I recommend using food grade plastics when growing vegetables or herbs that you are going to be eating. The reason is to avoid any potentially toxic byproducts that could leach out of the plastics and be taken up by the plants. If you have a plastic container you would like to reuse or recycle for container grown plants, look on the bottom for a recycle triangle. The recycle triangle has a number inside of it. If the number is 1,2,4 or 5 the plastic is approved for food use. Please refer to the following article for details
https://modernsurvivalblog.com/preps/safe-plastics-for-food-and-drink/