Producing method of Cannabis sativa L. seed

A method for producing Cannabis sativa L. seed capable of cultivating Cannabis female plants, the method comprising:

• spraying a first fertilizer composition on soil before sowing Cannabis sativa L. seeds;
• sowing Cannabis sativa L. seeds after tilling and preparing the soil on which the first fertilizer composition is sprayed;
• inducing the formation of budding flowers by providing Cannabis sativa L. germinated from the Cannabis sativa L. seeds with light, wherein the light is provided under a photosynthetic photon flux density (PPFD) condition of 15 to 20 μMm−2s−1 for 5 to 16 hours for 15 to 30 days:
• and then providing light under a photosynthetic photon flux density (PFFD) condition of 30 to 40 μMm−2s−1 for 5 to 16 hours for 15 to 30 days;
• inducing the formation of male budding flowers in Cannabis female plants by removing all Cannabis sativa L. male plants and retaining female plants where male budding flowers are formed by spraying a second fertilizer composition on Cannabis sativa L. female plants;
• after the second fertilizer composition was sprayed the light is provided under a photosynthetic photon flux density (PPFD) condition of 10 μMm−2s−1 for 10 to 12 hours and;
• producing seeds by fertilizing pollen in the male budding flowers formed in the Cannabis female plants with female flowers.