Mold on Clay Pot?
The first photo is on the day I repotted this ficus on March 1.
A little back-story:
This pot, which I actually like a lot, originally housed my Calathea -- which has been my most problematic plant this season (which eventually just required a drastic soil change and repot into a much smaller pot). As none of the problems were disease-related, I simply washed the pot with soap and water -- and let it dry. I did notice a lot of salt accumulation white marks on the bottom half of this pot when the Calathea was in it.
The size was nice for my Ficus so while changing the Ficus to gritty mix, I grabbed this pot to house the plant. As mentioned, that was March 1.
Come March 8 -- I took an update photo.
I didn't notice it when I took the photo, but you can definitely see the beginning of mold.
On March 10, I was watering the plant when I noticed a significant amount of fuzz and peering in, I spotted the mold.
Given my clean freak side -- my immediate action was to run for a paper towel and wipe it clean, then run for another with a few drops of pure bleach on it, and wipe it clean again.
And then, I sat there --- with the question of why/how there was mold on this container, and only this container, inside my house. It only occurred to me then that I should have taken a photo of it first; it's not like it was going anywhere.
Anyway, I forgot to post yesterday to ask this question -- but today, it's back -- photo below. It's milder than what I cleaned off yesterday, looking like a layer of dust that's piled on for months, but unless only this container is collecting all of the dust in this city -- the mold is growing back. This is in spite of the bleach I cleaned it off with!
Anyone have experience with what might be going on? I can easily chuck the pot, yes -- and I have triple-checked all of my other clay pots and there is no dust, mold or fuzzies on any of them. It's just this one pot.