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Ji Yulu, also known as "Jade Leaf" or "Yulu," is a popular succulent plant that requires specific care to thrive. Understanding its maintenance needs is essential for successful cultivation.
**Temperature:**
Ji Yulu prefers a climate with warm winters and cool summers. During the hot summer months, when temperatures rise, the plant may enter a dormant or semi-dormant state, causing slow or no growth. To keep it healthy, place it in a well-ventilated, cool, and dry area, avoiding direct sunlight and prolonged rain. Watering should be reduced, and fertilization should stop until cooler weather returns. In winter, the ideal minimum temperature is around 8°C, while daytime temperatures above 20°C allow for continued growth. If watering is controlled, the plant will go into dormancy. However, it can tolerate temperatures as low as 3°C–5°C, and even as low as 0°C, though extended exposure below 5°C can cause frost damage, especially on the outer leaves. Frost-damaged leaves turn white and cannot be restored, so it's best to maintain temperatures above 5°C during winter.
**Light:**
Ji Yulu is sensitive to light. Too much direct sunlight can cause the leaves to become reddish-brown and may burn them, leaving unsightly marks. On the other hand, too little light can result in leggy, thin, and less transparent leaves. For optimal growth, provide partial shade from May to September using a shading net, and remove it from October to April to allow full sun exposure. Plants grown in semi-shaded conditions tend to have thicker, more compact leaves with better transparency.
**Soil:**
The ideal soil for Ji Yulu is loose, fertile, and well-draining, with a sandy texture that contains some lime. A common mix includes 2 parts of humus soil, 3 parts of coarse sand or vermiculite, and a small amount of bone meal. For high-quality varieties like 'Yu Lu Shou Jin' or 'Mao Yu Lu,' you can use materials such as red jade soil, blue stone, or physalis, but adding some peat soil will increase organic matter content and improve soil quality.
**Watering:**
During the growing season, water Ji Yulu only when the soil is completely dry. Avoid overwatering, as this can lead to root rot. However, long periods of drought can also harm the plant, causing the leaves to become dry and dull. Mist the plant and its surroundings when the air is dry. You can also cover the plant with a cut-off transparent bottle to create a humid environment, which helps the leaves become plump and the "window" more transparent. Remove the bottle during the hottest months to prevent overheating.
**Fertilizing:**
In the growing season, apply a diluted liquid fertilizer or a low-nitrogen, high-phosphorus-potassium compound fertilizer once a month. Avoid fertilizing new plants or weak ones, and do not fertilize during the summer heat or when temperatures are low in winter. Fertilizing should be done in the morning or evening to avoid stress on the plant.
**Repotting:**
Ji Yulu’s roots secrete acidic substances that can acidify the soil, leading to root aging and hollowing. It’s recommended to repot the plant once a year in spring or autumn. If the plant shows signs of stunted growth or dry leaves, check the root system and repot if necessary. When repotting, trim any old, hollow roots, shorten long roots, and keep the thick, white new roots. Plant it in fresh soil to promote healthy growth.