The leaves of my Dracaena are a little curly. I was sunbathing on the balcony two days ago. Who does not know what happened?

Dracaena Dracaena likes high temperature and humid semi-cloudy environment, and leaves of Dracaena Dracaena are often burnt when raised indoors, which is mainly caused by environmental discomfort and improper maintenance. Prevention and control measures: ① In winter and spring, avoid being attacked by cold air, and the room temperature should not be lower than 10℃, otherwise it will be easy to freeze, and the leaves will appear dark brown spots and scorched edges. ② Direct sunlight should be avoided in summer, and 50% shading is the best, otherwise the leaves will be burnt. (3) spray water on plants every night in summer to maintain a high air humidity; Or put clean water in the basin bottom tray. (4) Avoid uneven wet and dry watering. If the leaves are too dry and the roots are too wet, the leaves will wilt. ⑤ Avoid applying raw fertilizer, fermented fertilizer and concentrated fertilizer that are not completely decomposed.

If Dracaena Dracaena is watered too much and wet in winter, hit by cold wind, and frozen at night below 10℃, the stem will die, rot and peel, and finally the whole pot will die. Therefore, it is most important to raise the dragon blood tree safely for the winter. Keep the room away from the window entrance, keep the room temperature above 10℃ at night, and water it not too dry to prevent the leaves from drying and peeling.

dragon tree

Scientific name: Dracaena angustifolia

Alias: mule cane tree, pig's foot, Dracaena angustifolia, Dracaena longifolia.

Perennial evergreen shrubs or trees of Liliaceae and Dracaena.

Origin: Dracaena is native to southern China and tropical Asia, and other species are also distributed in tropical Africa.

Morphological characteristics:

Evergreen shrub, up to 4 meters high, with gray skin. Leaves sessile, densely planted at the top of the stem, thick papery, broad strip or oblanceolate, length10 ~ 35cm, width1~ 5.5cm, swollen at the base of the stem, narrow near the base, obviously prismatic at the lower part of the midvein, with a terminal panicle, 60cm long and l~3 flowers clustered. These flowers are white and fragrant. Berries are spherical yellow. It belongs to many species and varieties and is used for garden viewing.

Habit:

Dragon's blood tree likes warmth, is afraid of cold, likes light but is afraid of sun exposure, and is most suitable for growing in a warm but not very hot environment. Spring, summer and autumn are the seasons when Dracaena acutissima grows vigorously. Dracaena acutissima likes high temperature and high humidity, sufficient sunlight and bright leaves. Not cold-tolerant, the winter temperature is about l5℃, and the lowest temperature is 5~lOC. When the temperature is too low, yellow-brown patches will appear at the tip and edge of leaves due to insufficient water absorption by roots, and loose soil with good drainage and rich humus will be preferred.

Breeding method:

Dracaena stenophylla can be propagated by sowing and cutting, and sowing can be used for cross breeding. Dracaena stenophylla is a horticultural variety, which usually does not need to be sown and propagated. Plants propagated by sowing have similar or different characteristics from wild species, and lose the excellent characteristics of horticultural varieties. Cutting propagation is the main method to maintain the quality of horticultural varieties. Cuttings can be perennial stems or shoots. The cuttings can be inserted into the bed with coarse sand or frog stone as the medium, and the suitable temperature of the bed is 2 1~24. C, with blade tips, the buds take root quickly, about 2~4 weeks, and the stems take root more than steamed bread, sometimes it takes 2 13 months to grow new buds and roots. After rooting, move into the pot.

Cultivation and maintenance:

Humus soil, peat soil and river sand can be used as mixed substrates and cultivated under 70 ~80% shade. Apply compound fertilizer 1~2 times a month during the growing period, keep the soil moist, and spray more leaves in summer to improve the air humidity, so that the leaves will be thicker, brighter and less prone to drying. In winter, keep it above 8℃, and the soil in the basin should be less drenched. However, by constantly wetting the ground and increasing humidity, it helps to keep the color of leaves and prevent dry tips. This plant has beautiful leaves and is a good material for all kinds of indoor decoration. If the humidity can be properly reduced before entering the room to adapt to the dry environment, and water is often sprayed on the leaves after entering the room, you can enjoy it indoors for a long time and it is not easy to dry the leaves. Plants damaged by indoor decoration can be recovered after a period of maintenance if the damage is not serious, and some seriously damaged plants are difficult to recover and can be used for seedling propagation; If the leaves are damaged for a period of time, as long as the residual branches are cut off about 2cm below the sprouting branches at the upper end of the stem and the routine management is continued, new branches and leaves can sprout after a period of time.

Pest control: due to the dryness of the ring planting, Dracaena draconis will be placed on the balcony or indoor windowsill for a long time, which is easy to breed red spiders. Red spider, commonly known as fire dragon, belongs to mite pests, which mostly cluster on the back of plant leaves, make nets to shelter and suck juice. The dragon's blood tree was damaged by it, its leaves faded, its chlorophyll was destroyed, and there were many small yellow spots on its surface, which gradually shrank, yellowed and withered, and even fell off in severe cases, losing its due ornamental value. Prevention and control methods. Starscream often hides on the back of branches and leaves or in dense places, so it is easier to catch it manually by pulling nets. If chemical treatment is adopted, 20% triclosan emulsion can be added with 800- 1000 times of water to make a solution for spraying. This medicine has a good killing effect on adults, nymphs and eggs. It can also be sprayed with 50% dichlorvos emulsion and 1000- 1500 times of water, and pay attention to the back of the leaves when spraying.

Garden use:

The plant shape of Dracaena is beautiful and regular, the plant shape is extremely beautiful, and the leaves are colorful and colorful. Some varieties of leaves are covered with yellow spots, which are called "Starwood". Some varieties of leaves have yellow longitudinal stripes, which can secrete a faint fragrance. People call it "dragon blood tree", and some varieties have white, milky and beige stripes embedded in their leaves, which is also called "tricolor dragon blood tree". The stem of Dracaena Dracaena can secrete bright red resin, which is called "Dracaena Dracaena". As excellent foliage plants in modern interior decoration, medium and small potted plants can decorate study, living room and bedroom, and large and medium-sized plants can beautify and decorate hall. Dragon's blood tree has strong adaptability to light. You can watch it continuously for 2~4 weeks in a dark room, and it can be placed for a long time in a bright room.