Prepare the basin soil in advance and choose the fertile and loose soil rich in humus. The selection of seed ball must choose a big and full-bodied ball without mildew.
In autumn, the bulbs are planted in flowerpots, in principle, one plant in one pot, but according to the size of plants and flowerpots, 4-6 plants can be planted properly in one pot, and 5-8 cm of soil can be covered after planting.
Within one week after planting, place the flowerpot in a cool and ventilated place, and move it to a bright place for maintenance one week.
Saffron is usually planted in autumn, and its growth period is winter and spring. The climate is cold and dry, so it needs proper watering.
About 20 days after planting, the seedlings should be watered once before emergence to facilitate emergence. Before entering winter, pour anti freezing water once to increase the soil temperature. In the middle of April, water should be poured once to reduce the harm of dry hot air.
When watering, do not pour ice water when the temperature is low. The temperature of the water is the same as the room temperature, so as not to affect the plant growth due to the freezing of the basin soil.
Before planting, a sufficient amount of base fertilizer should be added to the pot soil, such as cake fertilizer, stable manure, burning soil, plant ash, chicken and duck manure, etc., and some superphosphate should also be applied.
After planting and rooting, thin liquid fertilizer with balanced nitrogen and phosphorus can be applied every 10 days. Fertilization should not be too thick, so as not to cause excessive length of leaves and affect the growth of flower buds.
After the flowering of saffron in October, the quick acting fertilizer of nitrogen, phosphorus and potassium balance should be applied again once or twice to facilitate the growth and development of the bulb, so that the bulb can store enough nutrients for flowering and flowering in the next year.
From late April to early May, some of the branches and leaves on the ground of saffron gradually turn yellow, and the seed ball can be dug out of the basin for collection. After excavation, the seed balls shall be classified, and the rotten and diseased seed balls shall be treated in time, removed or thrown away.
Put the seed ball of saffron in the gauze bag, store it in the place with less light, shade and ventilation, and keep it dry indoors. It can be replanted in autumn.
Saffron in winter and spring, flower friends in planting, according to the need to choose different varieties. It is suggested that the spring flowering varieties should be selected, the spring environment is relatively good, and the bulbs should be stored in time after flowering, and the flowering time is longer.
The planting basin should be a clay basin with a diameter of 15-20cm, or a plastic basin with good air permeability. 4-6 big balls should be planted in each basin in September October. When also can use small basin, 3 ~ 5cm black plastic basin, a basin a ball.
