Molds and How They Grow (1969)

In this educational film, laboratory demonstrations show the effects of moisture and temperature on the growth of molds. Photomicrography reveals the structure of molds: hyphae, mycelium, spore balls, spores. Beginning with spores on a rice culture, time-lapse photography shows the formation of a new colony.

Unfortunately the movie Molds and How They Grow is not yet available on HBO Max.