GMSgrowsanswered grow question 4 years ago Fabric planters need more water to wet the entire root system. When they fill with roots they become very hard to get water/ nutes through the entire planter leaving dry spots in your root zone. Water comes out the sides before reaching the bottom. The dry areas in your root zone make the plant develop brown spots in your leaves, usually mid to near the top of the plant. More water, make sure all your roots are being fed. Easy on the nutes and you should recover. Cheers