If you fertilize so much, the rose will be short of magnesium.

Rose needs nitrogen, phosphorus and potassium fertilizer, which you will have heard of. Therefore, the usual fertilization will pay more attention to the application of these three elements. But what few people know is that the rose also lacks an element called magnesium. So what are the symptoms of lack of magnesium in rose?

For example, if the rose variety that is supposed to grow fast, the rhizome is easy to grow strong and easy to raise and live, it does not grow well at all, but appears some strange symptoms frequently. Of course, it is impossible to judge what went wrong with the rose at first. You need to do some of the most basic maintenance before you can rule out the cause.

First, the rose can not accumulate water, you can reflect on the recent watering situation of the rose, whether there is too much watering, for example, the soil has been kept high moist, if so, reduce the amount of water. Second, the rose can not lack sunshine. Although the hot season is to shade the rose, it is not completely shaded, and the most basic light for plant growth should be ensured.

If there is no stagnant water and insufficient light, it is still found that the leaves of the plant are yellow, but there is also a remarkable feature of this yellowing, that is, the veins of the leaves are green, but the rest of the leaves are yellow, and the branches near the lower part are blackened. This shows that the rose lacks magnesium.

Many flower friends begin to have doubts again. I am also very diligent in fertilizing. I often give it water-soluble fertilizer once a day and a half a month. How can I still lack nutrition? Because in fact, the general water-soluble fertilizer contains more nitrogen, phosphorus and potassium, but less or no magnesium. In particular, the long-term use of a certain kind of water-soluble fertilizer can easily lead to the lack of certain nutrients for a long time.

Lack of magnesium will affect plant photosynthesis, so there will be yellow leaves, and then slowly wither and fall off, branches will also be black, poor growth, the overall resistance will be seriously reduced. In addition to these visible symptoms, the most serious symptoms of magnesium deficiency are in the roots.

If you pull up the plant by the roots (but because we don't usually do this, it's hard to find), you'll find that the roots have rotted (not stagnant water). The probability of magnesium deficiency in potted plants is much higher than that in field plants, especially in pots with peat and coconut bran.

At this time to buy that special magnesium water-soluble fertilizer or slow-release fertilizer, with the supplement of magnesium, the leaves can slowly carry out normal photosynthesis, the leaves will begin to turn green, and the new leaves will be green. If the branches and leaves are seriously ill, they can be pruned properly.