But ten weeks old...one foot tall... Unless you've been topping and training them to be so short I'd guess that the plant is not getting good nutrition and will probably not harvest an average amount and size of buds. There are plant nutrients that are not 'chemicals', you know. Look at some 'organic' grows here in the forum. I don't use chemicals either. Compost tea is very good. It will keep the plant healthy and the buds tasty.
Tell us a little more about the grow. What are you growing in, a pot, the ground? What kind of medium, sandy loam? dirt dirt? Mirakill Grow? Can you show a photo?