Question: Is there a way to estimate the length of time a fungal colony or colonies have been growing? I’m sure that is based on the type of mold, water availability, temperature, food availability, etc. However, in the district we have found several mold growth areas that appear to have been active for several weeks (based totally on assumptions), not a matter of days as is relayed in the information provided.
Answer:. It’s difficult to tell the length of time a fungal colony or colonies have been growing. As you mentioned the rate of fungal growth will depend on water availability, temperature, food availabity, presence/absence of
growth inhibitors and most important the type of fungus. If we know the type of fungus and if it’s still actively growing,
then we can estimate the length of time the fungal colony has been growing. Under laboratory conditions, most fungi will
produce visible colonies in 3-5 days (some fast growing ones within 2 days) and produce spores within 5-10 days.