I have a plant growing outdoors, It is growing very well and its about 1.5 months old, I have not done anything to it as far as fertilizer or any plant food, When I transplanted it in to the ground I dug a hole about a foot deep and added miricle grow soil to it. My question is should I give it any plant food, or fertilizer, or just leave it alone and let nature do its thing. Also if I should fertilize, what type of fert, how much should I use, How often, and when should I start?