Is rockwool harmful to the environment?
No. It s tempting to be trite and leave it at that, but the Professor will expound. Rockwool, as the name implies, is produced from rock. Rock comes from the earth. Returning rock back to the earth after use (recycling) is a good idea. Many products are wrapped in plastic, however, and so the plastic wrap should be removed before tilling the rockwool into the garden or a farmer s field. Disposing of rockwool in a landfill, while not an appetizing thought, also has its positive aspects. Landfills (we used to call them what they really are- DUMPS) have a problem with anaerobic bacteria. Rockwool mixed in the garbage helps to aerate the mix and enhance aerobic bacterial activity. So whether you plow it or dump it you are helping the environment!