This is my first time growing tomatoes. Ive got about 8 plants which are 6ish weeks old. Ive noticed this on a couple of them, anyone know what it is?
They're inside under a full spectrum grow light and they stay at 70-75degrees, idk the humidity, I havent had the money to buy a humidity tracker.
Could it be from the peroxide solution I sprayed to get rid of the fungus gnats? Its not on all my leaves so I dont think so, but maybe?
by goldenlemonade2012