A plant develop rack includes a base, plural soil packages, a water supply device, and a water collecting tank. Plural rack units are disposed on the base and are arranged vertically. Each soil package encloses growth medium and plant and forms plural openings for the plant to extend outward. The water supply device is located above the rack units. Thereby, when the water supply provides water to the most upper rack unit, water may enter the soil package on that rack unit to nourish the plant. Thereafter, excess water may flow downward via draining holes of the rack unit to reach lower rack units. Thus, the soil packages on all rack units can acquire sufficient water for growing the plant.
