Mold and fungus is everywhere! Have you tried this method? Some indoor and potted plants are prone to getting white mold but don’t freak out. This is totally normal and is deemed harmless to the plants and us. This is because there can be a lack of air circulation, overwatering, and not enough sunlight to help dry it out.
Even looking around at my own pots some have a bigger issue while others seem just fine. An easy way to fix this would be to open windows and turn on fans to make sure there is enough airflow. Make sure there is adequate sunlight to help dry out the topsoil, and making sure not to overwater. The last one is the biggest part! Check to make sure of where your water levels are. If it's too high reduce it and let things dry out a bit.
If you have excess water feel free to drain it and let it dry up a bit. Plants like thyme do not like to be overwatered, so letting it dry out in between watering periods can help.
You can also scrape it off and replace it with new topsoil. My new personal favorite is adding a thin layer of ground cinnamon! Cinnamon is a natural fungicide and helps prevent the growth of mold. You can work it into the top layer of your growing medium!
*Originally posted on IG here