I asked the question because in the Portland area recently, A glass company uses chemicals that polluted the air and the ground. All the food and gardens are contaminated now and maybe for years. Some community gardens that was feeding the homeless in the area was effected too! I throught Hydoseeding could be answer! Until ground is tested to be clear! I was wrong! I am glad I asked the question. I learned a lot on how to use Rockwool blocks and the limited use!
