Plants often show signs of stress 3-6 days after the actual problem occured. You should be using VERY LITTLE nutrients if any while cloning. Just use distilled water for a week then if you're really ambitous use a fifth of what the nutrients say on the back for the rest of your cloning. Another thing that might help is a sugar refracto-meter, it measure the sugar content or something and can indicate plant stress before the plant shows signs. Oh, and another possibility is light stress, back your light up just in case if it's anything besides a flourescent.
Specialist Reviewed by Specialist on . signs of overwatering is the leaves curling up and getting brown spots on them a sign of over watering? they looked good when i went ot bed checked them 20 hours later starting to curl up and the ones that are curling up and the bigger ones they have brown spots or are startign to turn brownish anyone know whats going on? Rating: 5