What if the leaves of Phyllostachys pubescens turn black?
1. The light is not suitable.
(1) specific reasons
Too strong or too weak. If it is too strong, the rate of evaporation of water in the leaves will be very fast, and the leaves may turn black. On the other hand, if you are in a shady environment for a long time and the light is too weak, the chlorophyll cannot be formed and the leaves may turn black.
(2) solution measures
Generally speaking, in spring, summer and autumn, you can put it in a half-shaded place with a little scattered light. However, in winter, you can appropriately increase the light.
two。 Fertilizer is not suitable
(1) specific reasons
There are two cases, the first is too much fertilizer, which may lead to leaf burning. The second is the lack of phosphate fertilizer. In both cases, the leaves may turn black.
(2) solution measures
If it is the first kind, it should be diluted with fertilizer when applying fertilizer. In the second case, some phosphate fertilizer can be used appropriately.
3. Too little moisture
(1) specific reasons
If there is a long-term lack of water, the edges of the leaves will first become dry, then they may turn black, and then if they are serious, they may fall off.
(2) solution measures
In such a situation, it is necessary to water it in time. However, do not need too much, one-time watering, do not accumulate water. Next, just keep it moist.
4. The temperature is too low
(1) specific reasons
This mainly happens in winter. If it suffers frost damage, it will also cause the leaves to blacken.
(2) solution measures
In this case, the room temperature should be adjusted in time, or other heat preservation measures should be taken.
- Prev
What if the crab claw orchid only grows leaves but does not blossom?
There are three main reasons why crab claw orchids only grow leaves and do not blossom. The first is improper fertilization, it is best to use some phosphate fertilizer before flowering. The second is that without proper pruning, the first one or two sections need to be cut in the middle of October. The third is that the light is not suitable, there should be enough light during the day and enough darkness at night.
- Next
What if the leaves of crab claw orchid are dry?
To solve the problem of crab claw orchid drying up, we should start with the cause. When the light is too strong, we need to put it in a cool and ventilated place. The high temperature in summer should be cooled down. When there is too much moisture, it is necessary to strictly control moisture. Strict medication should be used when producing diseases and insect pests, and diseased branches should be pruned in time.
Related
- What if the leaves of potted flowers turn yellow?
- Florescence Control of several Flowers
- Anti-freezing technology and post-freezing nursing technology of flowers
- What is the classification of flowers? What are the common methods of flower classification?
- Prevention and control of alkali and acid damage of flowers in courtyard
- Technology of Anti-freezing and restoring growth of Flower seedlings in greenhouse and greenhouse
- How does flower fertilization not hurt the root? Fertilization technology of flowers
- Key points of disinfection in flower greenhouse
- Several pesticides that are banned or used cautiously in flowers
- How to fertilize the flowers that watch the leaves?