3 banana peels, about 50mg of coffee, 1g of wood ashes and join some chamomil tee to the mix just a lil bit, helps out in flavour and taste later on. Blend this add 2liters of water, shake this bottle 1x every 3/4 hours and then after a day give 100ml of mixture per plant.
Alternatively you can pass some banana peels thru some wood ashes, and bury those wood ash covered pieces of banana peel directly into the soil, just stick em right in there.