Potato Dextrose Agar (PDA) is used for the cultivation of yeasts, molds and fungi. Potato Dextrose Agar is composed of dehydrated Potato Infusion, Dextrose and Agar. Potato Infusion and Dextrose serve as the nutritionally rich base which allows robust fungal growth. The agar serves as the solidifying agent. Prepoured PDA plates are ready to use. No powder weighing, no mixing and no autoclaving is needed.