The seeds of Sweet osmanthus can be harvested from April to May. At maturity, the skin color changes from green to purple black and falls off the tree. You can pick seeds from trees or on the ground, but you should pick them up when they fall, otherwise, in the dry climate in spring, the seeds are easy to lose water and lose the value of sowing.
The seeds of Sweet osmanthus should be mixed immediately after harvesting. The outer seed coat of mature fruit is soft, wash with water, clean the peel, remove the empty and small seeds floating on the water surface, pick up the impurities, and then put them in the indoor shade. Do not air in the sun, this is due to the lack of wax layer on the seed coat of Sweet osmanthus, so it is easy to dehydrate and dry, and then lose physiological activity.
The seeds of Sweet osmanthus can only be seeded and raised after certain storage and germination, which is determined by its physiological characteristics of later ripening. Osmanthus seed storage mainly includes sand storage and water storage.
Cover the seeds of Sweet osmanthus with wet sand layer by layer. The place where the sand is stored is suitable to choose a cool and ventilated place, and stack it on the sand land.
The seeds of Sweet osmanthus are packed in airy bags which are not easy to retting. After being tied tightly, they are put into cold water, preferably running water. Pay attention to the regular inspection of seeds to see if they are moldy, rotten or dehydrated. Do not expose the seed bag to the water, especially in summer, the seed bag must be far away from the high temperature water layer of the water surface, in order to prevent the seeds from germinating and rotting.
