Vertical greening device for landscape architecture

According to the vertical greening device for the landscape architecture, when it rains, rainwater falls on a placement plate at the uppermost end, flows down layer by layer through second through holes, and falls into a reservoir below after irrigating greening pots in all rows; when the irrigation amount needed by the plants is reached, the second rotating plate at the upper end slides to the position over the placing plate to block rainwater, and excessive irrigation is avoided as much as possible. When no rainwater exists, the watering device can use the rainwater collected in the water storage pool to irrigate the plants, and redundant reserved water can fall into the water storage pool to be reused. When sunlight reaches the rear end of the first supporting plate, the first rotating plate is opened, so that plant rhizomes can be irradiated by the sunlight; the first sliding block slides to the front portion of the supporting plate, the plane mirror rotates through the first motor, and sunlight is reflec