When the fruits are ripe in October, they will be picked and stored in a dry and ventilated place. Take out the seeds in the next spring, use tools to separate the white seed hairs and seeds, and clean the seed hairs and impurities.
Before sowing, soak the seeds in warm water for 4-5 hours, wait until the seeds show white buds, then pull them out of the water, control the dry water and mix the sand. If conditions permit, potassium permanganate can also be used for disinfection, so as to avoid insect damage.
Select loose sandy soil and plant the treated seeds in the soil, but water them once before sowing. After the seeds are sown in, spray water properly every day to keep the cultivated soil moist.