I mixed 2 tbs of 20-20-20 plant food with one gallon of water for plants in the ground. the plants are in the vegetative state. I wat to know how much mixed water do I put on the plants. Also I have 4 plants in large buckets I leave outside I mixed I tsp 20-20-20 with I gallon of water how much of the mixed water sould I use in the buckets. Or should I put the water in a spray bottle and spray them if I spay them how much should I use then