What is this on the pot?

[TonMz]

What the hell is this?
I saw a bit of white day after potting these cuttings, just cleaned it off, didnt notice much more, recently checked rooting success and put back in, didnt notice anything for two weeks after and today, saw all this white fuzz? With yellow bits. Some kind of fungus? Anyone seen it before? Never had it on anything else and only ever on this terracotta pot AFTER potting these cuttings received from someone. The soil in the pot is from a batch used other places with no issues. It looks monstrous!

 

[greengirlgo]

Terracotta pots cause white fuzzy mold to grow on them, it’s harmless to the plants, just let it dry out between watering if it bothers you. If you have allergies to mold just spray it with hydrogen peroxide.

 

[TonMz]

Thank you.