Dutch potted iron plants can be cultivated by mixing garden soil, rotten leaf soil and river sand. The adaptability of Dutch iron is strong and the requirement of soil is not strict, but the growth of loose, fertile and well drained micro acid soil is the best. It can be cultivated with the mixture of loam and river sand with high humus content under pine and Berlin, and it can also be cultivated with the mixture of rotten leaf soil and river sand.
During the growing season, the basin soil should be kept moist to avoid excessive watering, which may cause water accumulation and rot of roots and stems. &In the growing season, it is necessary to maintain a certain air humidity, for example, when the temperature is 20 ℃, the humidity is about 50%; when the temperature is about 30 ℃, the humidity needs to be adjusted to about 70%, so as to maintain a good growth momentum.
It has vigorous vitality and low requirement for fertilizer. It is enough to apply liquid fertilizer 3-2 times a month in the period of vigorous growth.
The growth of iron in Holland requires sufficient sunshine. In addition to proper shade in hot summer, other seasons can be grown in full sunlight.
It can adapt to different light environment. However, it should not be too shaded, otherwise the new leaves are not easy to age and turn yellow, or cause excessive length and sagging of leaves. The growth rate of iron in Holland is general, and the requirement range of temperature is wide. The optimum growth temperature is between 15-30 ℃. It should be kept above 2 ℃ in winter, which is not resistant to severe cold.
Under the condition of high temperature and high humidity, Dutch iron is prone to leaf spot disease. When it is tough, the leaf edge of its tip appears black and brown spots. When it is serious, it spreads to most of the leaves. It should be prevented and controlled in time. 800-1000 times chlorothalonil should be used as the medicament.
