Problems below were plants grown indoors under grow lights. Soil has been custom made using some base from Home Depot, perlite, lots of trace minerals and rock dusts, coconut coir, worm castings, and a bunch of other fertilizers and things. I have not tested the soil yet to see what is causing issues below. If you could recommend home kits that would be great.
I have a couple problems with some Roma's I planted indoors. I used grow lights for them and they sprouted and grew very quickly. After about 3 months, they started getting Blight. It has been nearly 6 months now and I have not successfully cured them yet. I've used neem oil and it burned the plants pretty badly even after watering it down. Stopped using neem oil. Tried baking soda spray and it has slowed the progression but hasn't stopped it. I'm looking for ways to cure the blight and prevent it from future seedlings, which I will be planting soon.
2nd problem. Before the blight came in, my romas, bok choy, and spinach all got white spots on them. The white spots get leathery and look exactly as though you spilled bleach on colored fabric. Just turns an off yellow to white color. The Bok Choy actually looks slightly rougher when it occurs to them. I need to figure out what is causing this. Maybe a bacteria? But which kind and how do I treat it? This picture shows a simple blotch but on many other leaves it is more of a speckled mass all over the entire leaf.
3rd problem, my peace lillys are suffering pretty badly after a couple years of having them. I had them originally in some potting mix from Home Depot. I think the drainage became bad so I changed it to my custom soil blend. The drainage is better and I'm watering like you should, when they start drooping, but the issue is still happening. Issue is the edges turn brown and slowly grow into the center of the leaf. See bottom left of picture. What is causing this and how do I stop it?
I'm not a terribly experienced person but I am trying really hard because I'd like to do this commercially eventually. Any help is appreciated. Thanks for your time.