I noticed these dark spots on one of my seedling's leaves last night. What do you think is causing this? This is the only seedling that looks like this
My seedlings are about 3.5 weeks old, I up potted them four days ago into 3.5" pots with FF Happy Frog potting mix. When I watered them in I think I overdid it as the soil was very wet and some plants leaves turned a bit yellow, but most have bounced back to green. I haven't watered since.
Could the dark spots on this one be caused by my overwatering or does it look like something else?
by redpandaflying93