Fly ash has a high metal content generating concern that plants grown in fly ash will become a toxic source to wildlife. Accordingly, metal extraction experiments have been conducted on various parts of the plants. Preliminary results have revealed that there was not an appreciable difference in metal content with the same plants grown in the top soil controls. Further experiments are planned. Pilot studies using outdoor growth plots have been implemented to simulate the disposal of and investigate vegetative growth on fly ash.
Preliminary results show that rye grass grows fastest and fuller on fly ash.