The term “Vertical farming” was coined by Gilbert Ellis Bailey in 1915 in his book Vertical Farming.He stated inside about soil contents and vertial growth of roots. Peoples explored this knowledge and designed new types of vertical gardens. This project is one of the part and advance version of these designs. Mainly it contains vertical garden design and electronic circuit having soil moisture sensor at input that senses water content inside soil and gives it to control board ; through this it will control Motor and gives appropriate water supply.
Go through this link for more details:Auto Irrigated vertical garden.