My large and small leaves more toward the bottom of my plants are turning yellow. They are in pots of 1/3 potting soil, 1/3 coco coir, 1/3 worm castings with vermiculite, bone meal and some lime. Six are budding beautifully with one 1 lagging by a few weeks and not sure why. But, my question is why are the bottom leaves turning yellow? I'm thinking they are eating the nutrients so fast that they want more. I have plenty of worm castings and will toss more on top but I am wondering if I should add molasses, wood ash, more bone meal or anything else. Like I said the buds look sweet but I know that the yellow leaves are a sign of something. Oh, and I have been spraying them with epson salt solution every week or two. Thanks for reading and any replies!