What are the latest propagation methods for Anemarrhena asphodeloides?
Anemarrhena asphodeloides, also called hairy Anemarrhena, is a perennial herbaceous plant of the genus Anemarrhena in the Liliaceae family. It is mostly propagated by seed and can be sown in all seasons throughout the year, mainly in spring or summer. In recent years, in order to shorten the growth cycle, many places have also adopted the division propagation method. Below, let us take a look together at the propagation methods of Anemarrhena asphodeloides!
Growth habits of Anemarrhena asphodeloides
Anemarrhena asphodeloides is a perennial herb that prefers a warm climate and can tolerate cold and drought. It is best grown in loose, fertile, well-drained sandy loam soil. It is not suitable for planting on shady slopes or low-lying land. Each spring, when the average daily temperature is above 10°C, it sprouts and emerges from the soil. April to June is the period of vigorous growth, August to September is the period when the underground rhizomes expand and fill out, and the plants wither in November. The growth period is 230 days.
Division propagation of Anemarrhena asphodeloides
Division propagation of Anemarrhena asphodeloides is best carried out before sprouting in early spring or after the plants enter dormancy in late autumn. Dig out the 2-year-old rhizomes, cut them into sections with fibrous roots, with each section bearing 2-3 buds, and open furrows at a plant-to-row spacing of 5 cm × 20 cm for planting. The furrow depth is 1-5 cm. Place the cut propagation material flat in the furrow, cover with soil, press firm, and water. When planting in late autumn, to ensure safe overwintering, mound 6 cm-7 cm of soil over each plant. In the following spring, level the soil mounds to facilitate the emergence and growth of new buds. To save propagation material, you can also, in combination with harvesting, cut off the bud heads of the dug-out rhizomes to use as propagation material for division propagation, while the rhizomes are processed for medicinal use.
Seed propagation of Anemarrhena asphodeloides
1. Seed collection and storage: Anemarrhena asphodeloides begins to produce flower stems in the second year after sowing. A 2-year-old plant produces only 1 flower stem, while a 3-year-old plant produces 5-6 flower stems. Each stem spike bears about 150-180 flowers. The fruit matures about 60 days after flowering. For seed collection, select robust plants grown for more than 3 years and free of pests and diseases. The fruit maturation period is from mid-August to mid-September. The maturation time is inconsistent, and the fruits fall off very easily. Therefore, the fruits should be picked sequentially as soon as they just mature. After harvesting, rub out the seeds, winnow away impurities, and store them for later use.
2. Seed selection: Experiments have shown that the germination rate of Anemarrhena asphodeloides seeds is not high. Seeds collected in the previous year have a germination rate of 40%-50%, so seeds stored for no more than 2 years should be selected for sowing.
3. Soaking to promote germination: Soak the seeds in early to mid-March. Soak the seeds in 60°C warm water for 8-12 hours, remove them and dry the outer skins, then mix evenly with 2 times their volume of moist fine sand. Dig a shallow pit in a sunny, warm place, pile the seeds in the pit, cover with 5 cm-6 cm of soil, then cover with agricultural film and press the surrounding soil firm. The suitable germination temperature for the seeds is relatively high, and how early or late they germinate depends on the air temperature at the time. At an average temperature of 13°C-15°C, they begin to sprout in about 25-30 days; at 18°C-20°C, they germinate in about 14-16 days. When the radicles of most seeds have just emerged from the seed coat, they can be sown in the field. The sowing rate is about 3 kg per mu.
4. Sowing time: Anemarrhena asphodeloides can be sown in either autumn or spring. Autumn sowing is before the ground freezes, and spring sowing is in April.
5. Sowing method: On the previously prepared seedbed, open furrows at a row spacing of 20 cm and a furrow depth of 2 cm. Mix the pre-germinated seeds with ammonium sulfate at a ratio of 1:5, then evenly scatter them into the furrows, cover with soil and level it, press lightly, and keep the soil moist. As long as the soil moisture is good and the temperature is normal, seedlings can emerge in about 10-20 days.