Fully-ornamental maintenance-free, water-saving flower-pot and cultivating method

The present invention relates to a fully-ornamental maintenance-free water-saving flower vase and its plant-planting method. Said flower vase is formed from nutrient tank for planting plant and water tank. The water vapor in the water tank can be used for moistening plant root and tower nutrient substance, and can induce the plant root to search for water source. As compared with traditional mode it can save water by 90%, and the soil can not be hardened or salinized, and the upper surface soil of said nutrient tank is always dried, so that the condition for breeding of pests and causing diseases can be eliminated.