What are the cultivation methods for Aglaonema modestum (Chinese evergreen)?

Soil:

Generally, a mixed soil of leaf mold plus sand is used for potting. In the south, it can be grown in pots or in open ground, while in the north it needs to be grown in a greenhouse. It is not demanding about soil, but it fears waterlogging. Whether planted in the ground or in pots, Chinese evergreen dislikes hard clay and alkaline soil.

Humidity:

Aglaonema modestum likes a moist climate environment, and requires the relative air humidity of the growing environment to be 60%-75%.

Temperature:

Aglaonema modestum likes a warm living environment and is not cold-tolerant. The overwintering temperature should be kept above 5°C-8°C for normal growth.

Light:

It likes a semi-shaded environment, is extremely shade-tolerant, and fears direct sunlight. It can be cultivated and maintained indoors year-round, and even in a place with overly dim light, it will not grow leggy like other plants. It dislikes direct strong light in summer; when the light is strong, the leaf tips easily dry out, the edges scorch, or the leaves even turn yellow and withered, affecting the ornamental effect.

Fertilizing:

In summer, fertilizing should generally be stopped. In spring and autumn, apply once every 3-4 weeks a decomposed cake fertilizer solution, which can make the plant grow robustly with green leaves. During the growing period, apply once every two weeks a liquid fertilizer mainly based on nitrogen fertilizer.

Cultivation methods for Aglaonema modestum

Aglaonema modestum is very shade-tolerant and grows in bright, scattered light. Places such as the north side of buildings and under trees are very suitable. In spring and autumn, it can see sunlight in the morning and evening; in summer, avoid direct scorching sun, as strong light easily makes the leaves turn yellow. During the growing period, keep the soil constantly moist; in summer, water should also be sprayed twice a day to increase humidity, lower temperature, and wash dust off the leaf surface. From May to October, apply cake fertilizer solution once every half month, which can keep the leaves green and glossy. If grown in water, simply put a small amount of long-acting flower fertilizer tablets or compound fertilizer into the container, and it will grow very well.

Aglaonema modestum likes loose, fertile, humus-rich, well-drained, slightly acidic soil. For potting soil, peat soil or fine sandy soil mixed with a small amount of barnyard manure can be used.

Aglaonema modestum likes a warm living environment and is not cold-tolerant. The overwintering temperature should be kept above 5°C to 8°C for normal growth. For the three varieties Aglaonema commutatum, Aglaonema commutatum 'Variegatum', and Aglaonema costatum, the suitable overwintering temperature for Aglaonema modestum should not be lower than 18°C.

Aglaonema modestum likes a semi-shaded environment, is extremely shade-tolerant, and fears direct sunlight. It can be cultivated and maintained indoors year-round, and even in a place with overly dim light, it will not grow leggy like other plants. It dislikes direct strong light in summer; when the light is strong, the leaf tips easily dry out, the edges scorch, or the leaves even turn yellow and withered, affecting the ornamental effect. Therefore, after being moved outdoors in early spring, it should be shaded.

For watering Aglaonema modestum, besides keeping the pot soil moist in summer, watering in spring and autumn should not be too frequent, and watering should be controlled in winter. Chinese evergreen has fleshy roots, so it fears waterlogging most; if watered too much, the roots easily rot. But the air must be kept moist. If the air is dry, undesirable phenomena such as dried leaf tips easily occur. In dry seasons, pay attention to spraying water around the plant to increase air humidity.

In spring and autumn, apply once every 3-4 weeks a decomposed cake fertilizer solution, which can make the plant grow robustly with green leaves. During the growing period, apply once every two weeks a liquid fertilizer mainly based on nitrogen fertilizer.

During the growing period, Chinese evergreen is easily harmed by leaf spot disease, anthracnose, scale insects, brown soft scale, and the like, and attention should be paid to prevention and control.

If the Chinese evergreen plant is too tall and its shape is poor, it can be cut back short after retaining 1-2 nodes, and the newly sprouted plant will grow more vigorously. The cut branch with a growing tip can be directly inserted into a water bottle for viewing, and after about 30 days white tender roots can grow. In addition, around the Beginning of Summer, several old leaves on the outer part of the mature plant should be cut off to facilitate the sprouting of new buds and new leaves.

During the growing period, Chinese evergreen is easily harmed by leaf spot disease, anthracnose, scale insects, brown soft scale, and the like.

This disease occurs on the leaves of Chinese evergreen, and is prone to occur in weather with high humidity. The lesions at first are small brown spots, with the surrounding area water-soaked and fading to green, expanding in concentric rings, round to oval, with brown edges and grayish-white centers. Later, blackish-brown mold spots appear in the center of the lesions, and under moist conditions they become a blackish-brown mold layer. The method to prevent and control this disease is to promptly remove diseased and residual leaves; both at the early and late stages of onset, spray with 0.5%-1% Bordeaux mixture (or 50% carbendazim 1000-fold solution).

This disease also occurs on the leaves of Chinese evergreen, and in severe cases can spread to the petioles. The lesions at first appear as water-soaked small yellow spots, and after expanding become oval to irregular brown or yellowish-brown, slightly showing concentric rings; later the lesions join together into a dry and withered appearance and produce small black dots arranged in concentric rings. This disease is mainly caused by poor ventilation, and the presence of scale insect damage favors the occurrence of the disease. The method to prevent and control this disease is to strengthen maintenance and increase the application of phosphorus and potassium fertilizers; at the early stage of onset, spray with 0.3%-0.5% equal-amount Bordeaux mixture (or 60% zineb 800-900-fold solution, or 70% thiophanate 1500-fold solution).

This insect has complex feeding habits and can harm many plants, and Chinese evergreen is one of the flowers damaged by it. When brown soft scale harms plants, it generally gathers in groups on the leaf surface or tender leaves, piercing and sucking the plant's sap, and at the same time excreting sticky liquid. Its excrement easily causes sooty mold bacteria to multiply in large numbers, making the stems and leaves turn black, affecting the plant's photosynthesis, causing weak growth and yellowing leaves, and hindering viewing. When the infestation is severe, the branches and stems are covered with insect bodies, causing the plant to turn yellow and wither, affecting growth

Cultivation methods for Aglaonema modestum