Looks like there are two things going wrong here. One is the yellowing, which could be due to an inability to uptake nitrogen. The leaf curling to probably due to a pH problem. You're using potting soil that specifically says it's for outdoor growing, but you are using it indoors. The ferts in that soil need the bacteria which is in outdoor dirt to break them down to where the roots can take the stuff up. The hot fert load is causing the pH problem and because the ferts aren't being broken down (since the bacteria are missing), flushing may or may not help. Frankly, I think that since they're that big and already in larger containers, it's probably too late to fix this problem. Next time use Happy Frog potting soil you get at hydro grow shop. What you're suppose to do with that soil you have is mix it with outdoor dirt, but you don't want that dirt in your indoor grow. Soils are specially made for indoor growing, like Happy Frog or Roots brand.
polishpollack Reviewed by polishpollack on . Help, new plants turning yellow, curling leaves filled out TS form Hi all, I will try to include some pictures, but our young plants are turning yellow and curling up. We filled out the plant problems troubleshooting form below. Any ideas? If I had to guess, I'd say nute burn, but there is no mention of fertilizer on the bag anywhere (see soil description below). Soil description: Kellog Patio Plus, All natural Outdoor Potting Soil with the following added ingredients: Worm casings, kelp meal, bat guano, organic chicken manure, composted forest Rating: 5