Since greenhouse plants lack the natural benefits of uninhibited sun, soil, and rain, special fertilizers and foods for greenhouse plants are necessary for successful greenhouse crops. Outside plants obtain nutrients from the soil, but greenhouse crops are generally planted in sterilized soil to help control bacteria growth and insect infestations. This removes essential nutrients from the soil. In addition, planting in containers isolates plants and prohibits the transfer of nutrients from nearby soil during heavy rains.  Read more...