Yulu maintenance manual

Yulu (Haworthia obtusa var.pilifera) is a "soft-leaf" variety in the 12-volume genus of Liliaceae. There are many varieties of this department, the more common ones are grass jade dew, jade chapter, Ji jade dew, large jade dew, thorn jade dew and so on. Yulu plant is exquisite and small, rich in species, leaf color glittering and translucent, rich in variety, like a living handicraft, very lovely, is one of the popular small succulent plant varieties in recent years. Then how to maintain Yulu in the end?

Light

More sensitive to light, if the light is too strong, the leaves grow poorly, showing a light reddish brown, and sometimes strong direct light will burn the leaves, leaving ugly marks. On the other hand, if the cultivation place is too shady, it will cause the plant type to be loose and not compact, the leaves are long and thin, and the transparency of the "window" is poor, so it is very difficult for such plants to restore their original appearance, and they can only wait for this batch of overgrown leaves to fall off slowly and then grow strong new leaves. For the plants growing in semi-shade, the leaves are plump and transparent, so a layer of shading net can be added from May to September, and the shading net should be removed from October to April of the following year to give full light.

Soil

Yulu is suitable for growing in sandy soil with loose and fertile soil, good drainage and air permeability, calcareous and coarse grain size. Commonly used rotten leaf soil 2 parts, coarse sand or vermiculite 3 parts of mixed soil, and mixed with a small amount of bone powder and so on. High-grade varieties such as' Yulu Shoujin 'and' Mao Yulu 'can also be planted with synthetic materials such as red jade soil, orchid stone and phytolith, but an appropriate amount of peat soil should be added to increase the content of organic matter in the soil.

Watering

Watering during the growing period should master the principle of not drying and watering thoroughly, avoid stagnant water, let alone rain, especially not long-term rain, in order to avoid rotting roots. But it is not suitable for long-term drought, otherwise the plant will not die, but the leaves will be withered and the leaf color will be dim. When the air is dry, you can often spray water to the plant and its surrounding environment, and in the growing season, you can cover the plant with a transparent colorless beverage bottle with the upper half cut off, so that it can grow in a small environment with moist air, which can make the leaves full and the transparency of the "window" higher. But the hot summer season must remove the beverage bottle, so as not to cause plant death due to muggy heat and humidity.

Fertilizer application

During the growing period, mature dilute liquid fertilizer or compound fertilizer with low nitrogen and high phosphorus and potassium can be applied once a month for vigorous plants, while new plants or weaker plants do not need to be fertilized. There is no need to apply fertilizer during the dormancy period when it is hot in summer or low in winter. Fertilization time should choose sunny morning or evening.

Turn the basin

As the roots of Yulu will secrete acidic substances, causing soil acidification and making the roots aging and hollow, the pots can be changed once a year in spring or autumn. If it is found that the growth of the plant is stagnant and the leaves are withered during the growing period, it is likely that the root system is damaged, and the root system should be rearranged in time. When turning the basin, cut off the aging hollow roots, cut the excessively long roots short, retain the stout new white roots, and then plant them with new culture soil. Newly planted plants can be watered frequently, but less watered, so that the plants can resume growth as soon as possible.

Post-anthesis management

As the ornamental value of the flowers of Yulu is not high, if there is no seed, the scape can be pulled out from the base so as not to consume too much nutrients. It should be noted that the scape should not be cut with scissors, but should be pulled out by shaking it around with your hands, so that the residual pedicels can be avoided and adversely affect the growth of new leaves in the future.

Pest control

The main disease is root rot, which is caused by poor permeability of cultivated materials and long-term stagnant water in the soil. Therefore, the cultivation environment should be improved, loose and permeable soil should be selected, and there should be no long-term stagnant water. In addition, long-term accumulation of water in the center of the plant will cause a rotten heart. If the soil is not changed for a long time, the plant physiological disease will be caused by the senescence and hollowness of the root system, which will make the plant stop growing and the leaves will be withered and not full. The insect pest has the root pink scale, can carry on the high temperature treatment to the soil before planting, and add insecticide to the soil.

Ramet propagation

Yulu ramets can be combined with changing pots, or the young plants next to the mother plant can be dug in the growing season, with or without roots can survive, rootless seedlings can be planted directly, rootless seedlings should be hung for 1 or 2 days, and then planted after the wound is dry, the newly planted plants should not be watered too much, so as not to cause rot, and then carry out normal management after growing new roots.

Cuttage propagation

Yulu grows buds in the leaf axils of the lower part of the plant. for the species that are not easy to produce buds, the growing point in the center of the plant can be destroyed to promote the germination of buds. After the buds reached 2~3cm, the buds were removed and hung for 2-3 days. After the wounds were dried, the buds were cut in the culture soil. After cutting, the soil was semi-dry, and new roots could grow after 2-3 weeks.

Leaf cutting propagation

Can choose robust fleshy leaves, the growing period in vermiculite or coarse sand and other well-drained substrate cutting, after cutting to keep the basin soil slightly moist, fleshy leaf base easy to take root, and grow small buds, such as small buds slightly larger before planting.

Sowing and reproduction

Yulu can bear seeds only through artificial pollination. Generally choose the sunny morning when blooming, the method is to select two Yulu plants that bloom at the same time, or pollinate varieties such as Shou and Vientiane, which are also 12-volume genera. Parents require compact plant type, thick and full leaves, high transparency of the "window", remove the petals during pollination, remove the pollen and apply it to the stigma of another flower. The pollen can also be removed in the afternoon the day before and carefully preserved. Pollination will be carried out the next morning, with a higher success rate. Wait for the plant to seed and mature before sowing. The seeds can be sown with picking, and the sowing soil can be mixed with 3 parts of vermiculite, rotten leaf soil or peat soil. It is best to disinfect the soil at high temperature before sowing to eliminate germs and eggs in the soil. Cover with a piece of glass after sowing and emerge in about 20 days. Remove the glass after emergence, pay attention to ventilation, do not make the soil too dry, when the seedlings are too crowded, pay attention to seedling transplanting.

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