The invention discloses a flower planting organic matrix which is prepared from the raw materials of ditch bottom mud, leaf mold, plant seed extractive, betel nut peel powder, tourmaline powder and mineral element powder. The plant seed extractive is prepared by the following technology which comprises the steps: grinding salix psammophila seeds, haloxylon ammondendron seeds and soybean seeds intopowder, evenly mixing to prepare seed powder, then adding a methanol solution and performing ultrasonic extraction, filtering to take filtrate and vacuum freeze drying to prepare the plant seed extractive. The flower planting organic matrix disclosed by the invention has the advantages of rich nutrients, soft soil texture, good breathability, favorability for quick growth of flowers and favorability for preventing insect damage.