Culture methods of Hemerocallis vulgaris

Hemerocallis, also known as Hemerocallis, is a perennial herb of the genus Hemerocallis in Liliaceae. it has special tolerance to alkaline soil and can be used as a rare greening material for oil fields and tidal flat zones. it can also be used to arrange all kinds of flower beds, road barriers, sparse forest and grass slopes, and can also make use of its dwarf characteristics to do ground cover plants. Let's take a look at the breeding methods of Hemerocallis.

Morphological characteristics of Hemerocallis davidii

Hemerocallis hemerocallis fleshy rhizome is short, divided into fleshy root and whisker root, fleshy root is fusiform, whisker root grows on fleshy root. With short rhizome, leaves basal, distichous, leaf blade linear, ca. 30-45 cm long and 2-2.5 cm wide. The flower stem is higher than the leaf, branched above, the floret is 2-4, fragrant, the flower is large, with short pedicels and large triangular bracts. Corolla funnelform or campanulate to campanulate, lobes curved, florescence from July to August. Capsule ellipsoid, slightly triangulate, ca. 2 cm.

Growth habits of Hemerocallis davidii

Hemerocallis is born under forests, wetlands, meadows or grasslands at low elevations. it has strong cold tolerance, sufficient light tolerance, semi-shade tolerance and loose soil requirements, but it is better to use permeable soil with high humus content and good drainage. Fertilizer is often applied during the growing season. In the north, the underground tubers should be dug up before frost and stored in an environment with a temperature of about 5 ℃. The optimum temperature for open field cultivation is 13-17 ℃. Resist the infection of diseases and insect pests, and have strong tolerance to noise and dust.

The Propagation method of Hemerocallis

1. Ramet: when ramet, take part of the tiller of the plant cluster as the seedling, dig the part with root, cut it from the shortened stem, cut off the old root, rotten root and diseased root, retain the fleshy root as far as possible, cut it short properly, and then plant it. Planting should be carried out on a sunny day, digging seedlings, dividing seedlings and planting seedlings at the same time, with as little root injury as possible, so that the seedlings are slow and fast, usually once every 2 to 3 years, in order to ensure the exuberant growth of the plant.

2. Sowing: Hemerocallis enters the seed collection period around September every year, and sows in the next spring. The nursery bed should be fertilized with sufficient bottom fertilizer first. The bed is 1.3 to 1.7 meters wide and 30 meters long. When sowing, open a shallow trench with a depth of about 3 cm every 20 cm, sow the seeds evenly into the ditch, cover a layer of fine soil, and then cover a thin layer of fine sand. Watering and weeding should be done before seedling emergence, and good soil moisture can be maintained so that seedlings can be planted in autumn.

3. Split bud: flower bud refers to the small plant on the flower stem of Hemerocallis, which can be cut from the flower stem and can be further divided before planting if it is large. The transplanted flower buds can take root after a week, and the rooted flower buds can be used to propagate plants, increase the number of plants planted, and finally improve the economic benefits.

4. tissue culture: young leaves, filaments and flower moss were used to culture plants. the method was to induce callus from young organs, and then to culture young plants with proper medium under suitable conditions such as warm and wet phosgene. Then the seedlings were pseudo-planted in the nutrition bowl, and the seedlings were cultivated for a period of time, and then planted.

Culture methods of Hemerocallis vulgaris

1. Planting: Hemerocallis does not have strict requirements on soil, and can grow normally in saline-alkali land and sandy land, but the permeable soil with high humus content, deep soil layer, superior irrigation conditions and good drainage is the best. When preparing the soil, apply a certain amount of organic fertilizer, and then leveling, raking fine, the whole bed, the width of the bed is 2-3 meters, easy to manage. Trench or hole-digging planting, planting should not be too deep or too shallow, plant spacing of 30 cm to 40 cm is appropriate, after planting cover soil compaction, watering through.

2. Watering: Hemerocallis does not need to be watered if the weather is not very dry and early during the whole growth and development period, but if the soil moisture is insufficient after sprouting in spring, the number of flowers will be affected, so it should be watered in spring in the spring drought area. Adequate water supply should be provided during the growing season, and the soil should be kept loose and moist, otherwise it will affect the normal flowering and flower quality of the plant.

3. Fertilization: Hemerocallis hemerocallis was fertilized at the right time from the second year of planting, which had a great influence on the flowering of the same year. Liquid fertilizer had better be applied three times in the whole year, the first time when the new bud grew to about 10 cm, the second time when the flower was seen, and the third time it was applied 10 days after flowering. Hemerocallis hemerocallis has a long flowering period and has a large demand for nitrogen, phosphorus and potassium. In addition to applying sufficient basic fertilizer (suitable for rotten cow manure or pig manure), it is also necessary to apply fertilizer according to the needs of different development stages.

4. Weeding: after planting Hemerocallis hemerocallis, in order to ensure the normal growth of seedlings, weeding should be timely ploughed and weeded, generally divided into two methods: one is to use herbicides to remove weeds in the field, and the other is to loosen the soil mechanically or manually to remove weeds in the field.

5. Insect pests: the common diseases of Hemerocallis are leaf spot, leaf blight, rust, anthracnose and stem blight, etc., and the main pests are red spiders, aphids, thrips, leaf miners and so on. The disease can be controlled with 3000-fold spray of 75% chlorothalonil.