How to Propagate Amomum tsao-ko? A Detailed Guide to Propagation Methods for Amomum tsao-ko
Amomum tsao-ko is the fruit of a plant in the ginger family (Zingiberaceae), genus Amomum, growing in tropical and subtropical humid, shaded broadleaf forests. It prefers a warm, humid climate, fears heat, drought, and frost, and grows at an average annual temperature of 15-20°C. Its propagation methods mainly include division propagation and seed propagation. Let's take a look together below!
Division Propagation of Amomum tsao-ko
In spring, when new shoots begin to sprout but have not yet emerged from the soil, select one-year-old vigorous divisions from the mother clump, cut off the lower leaves, and keep 2-3 upper leaves to reduce water evaporation. Dig up the rhizome with buds, cut it into lengths of 7-10 cm, and plant after cutting. Open holes at a spacing of 1.3 m × 1.7 m, with planting holes measuring 50 cm × 50 cm × 40 cm, plant 1 clump per hole, firm the soil after covering, and water thoroughly to settle the roots.
Seed Propagation of Amomum tsao-ko
1. Seed collection and selection: Harvest in August-September when the fruit is ripe and the peel turns purplish-red. Remove the peel, wash off the pulp, then soak the seeds in clean water for about 10 hours, and store them mixed with moist sand. Select high-yielding plants with large fruits, plump seeds, and no pests or diseases as seed collection plants.
2. Seed treatment: Before sowing, first remove the peel, wash off the pulp, soak the seeds in clean water for 10-12 hours, then place coarse sand and seeds in a bamboo basket and rub them thoroughly until the aril is rubbed off. Alternatively, mix the seeds with 30% plant ash, rub the seeds apart by hand, remove the surface gelatinous layer, and then sow or dry and store until sowing in the following spring.
3. Sowing time: Sow immediately after harvest; both autumn and spring are suitable, with autumn sowing being better. Spring sowing should be carried out when the temperature rises above 18°C. For autumn sowing, when the monthly average temperature is above 18-20°C, a large number of seeds will sprout and emerge within 1 month. After sowing, the germination rate can reach over 80% in 40-50 days, and over 90% from December to the following February.
4. Sowing method: When sowing, open furrows on the seedbed at a row spacing of 15-20 cm, place seeds at a plant spacing of about 6 cm, and sow at a depth of 1.5-2 cm. After sowing, cover with soil, cover with grass, and water. Seedlings can be transplanted after half a year of raising.