Yea, your going to need a stem.the problem is the leaves have nothing to attach to. they're just random leaves without a plant.
wood ash is just as it sounds, ash from burnt wood, I'd start small when using ash as it will bring your ph up, not really a buffer like lime is. but the wood ash will help with nutrient lockout almost immediately, you can also add the ash to your water and do it that way, but id start small like a tablespoon or two per gal of soilWhere do I get wood ash? And I have them in 5 gal pot so I would use 1 1/4 cup of wood ash?