Soil

Potted iron tree is suitable for loose and fertile slightly acidic sandy soil with good drainage

Temperature

Iron trees like to be warm. They should spray water properly to cool down in summer and keep the room temperature at about 10 ℃ in winter. Iron tree has strong cold resistance, but when the temperature is 0 ℃ in winter, it should be moved indoors or in a warm place for overwintering

Illumination

Iron trees cannot be placed indoors for too long. Because the iron tree likes light, the lack of light makes its leaves sparse, thin and yellow. Therefore, the breeding season should be placed in a sunny place, especially when the new leaves grow in spring and autumn, they should be placed in direct sunlight for maintenance, and then moved indoors for viewing after the new leaves grow old and mature. However, in summer, we should avoid exposure to the hot sun, otherwise it is easy to cause scorched leaves and yellow leaves of iron tree

Watering

The iron tree is drought tolerant and likes to dry rather than wet. Watering should see dry and wet

Generally, water once every 10 days in winter, once every 3-5 days in spring and autumn, and once every morning and evening in summer. If the soil in Tieshu basin is too wet for a long time, it will cause yellow leaves and rotten roots

Fertilization

In the growth period of iron tree, top dressing should be often applied, mainly nitrogen and potassium fertilizer, and rotten cake fertilizer and water are better. When applying fertilizer, pay attention to thin fertilizer and frequent application, and avoid too thick. Pay attention to applying more vanadium fertilizer and water, put some rust iron into the soil, or buy special fertilizer for iron tree in the flower market, which can make the leaf color of iron tree dark green and shiny and improve the ornamental value

Pruning

During the cultivation of iron tree bonsai, in order to be beautiful, the old leaves and withered and yellow leaves of the next year should be cut off, and the over dense or long leaves should also be trimmed as appropriate to maintain the symmetry of the tree shape

Turning Basin

Turn the basin every 2-3 years, preferably from March to April in spring. When turning the pot or changing the pot, the dry and bad roots should be cut off, and 1 / 2 ~ 2 / 3 of the old soil should be removed and replaced with fertile and loose new soil, so as to make the plant grow vigorously. At the same time, pay attention to empty the basin bottom to facilitate ventilation and water permeability

Pest control

Potted iron trees should be placed in ventilated, transparent, hygienic and clean places, which can effectively prevent the occurrence of diseases and pests

The main pest of iron tree is scale insects. When scale insects are found, they can be washed and killed manually. If the pest is serious, they can be watered with L% ferrous sulfate diluent