No wonder the iron tree at home doesn't grow well without knowing the knowledge of the iron tree.
Maintenance knowledge:
The main results are as follows: 1. The iron tree has been growing for many years, and the old leaves in the lower part of the stem are easy to fall off, which makes the whole plant worse. Therefore, it is generally necessary to prune the stem at the end of spring, leaving a height of 20 cm from the base to cut off the upper stem, which can promote the dormant buds on the stem to germinate and grow new branches.
2. The cut stem can be used for cutting propagation. Cut the stem to remove the leaves, observation, cuttings generally have 3 bud holes, inserted into the peat and river sand mixed into the clean substrate. It can take root in 3-4 weeks.
3. Excessive light during the growth period can easily lead to leaf aging and dark color shedding. Liquid fertilizer should be applied regularly. If the fertilizer is insufficient, the old leaves will fall off and the new leaves will be small.
4. Tieshu likes high temperature, and the dry air in the environment is easy to cause the dry tip or edge of the leaf to turn yellow. When the temperature is low in winter, the iron tree will enter a dormant period, which should be watered less to avoid root rot.
Common diseases and insect pests:
1. If there is a disease spot on the leaf, there is a sparse mildew layer on the leaf surface, especially at high temperature and high humidity, this is leaf spot disease, it is necessary to strengthen ventilation, cut off the diseased leaves, and then spray 1000 times methyl topiramate solution 2-3 times, you can be cured.
2. The veins of the new leaves turn yellow and scorch inward along the edge and tip of the new leaves. This is the yellow leaf disease caused by iron deficiency of the plant. Spraying the leaves with 0.2% ferrous sulfate solution, once every 5 days, about 3 times can be relieved.
3. The common diseases and insect pests of iron tree are mainly scale insects, which are mainly caused by poor indoor ventilation and dry air. You can spray water on the leaf or wipe it with detergent water. Red spiders may appear between February and July. You can kill insects with Gao Ximan (biphenylhydrazine ester) or Huasheng according to the instructions.
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