Startup Idea : Self-sustaining Home Garden

currently home gardens are time and space consuming that requires regular efforts like Watering the plants, draining of excess water that when they accumulate especially after rain which can even breed mosquitoes. Thus a garden that has many tier and are all linked together to create a central drainage system with a preset timer for watering the plants can be used. I have already made a prototype. Now I would just require help for programming the watering system such that it can even be controlled by i phone or internet. I know such thing has already been invented so i don't thing it would be big problem.