Hello everyone, here is the garden with the poems, I am spring. In autumn, many varieties of rhododendrons begin to bloom, but azaleas bought home from the flower market or online often have various problems. If it is a problem such as falling flowers and buds, the symptoms are obvious, and it is convenient to prescribe the right medicine, but like the problem that the leaves of the rhododendron are getting smaller and smaller, many flower friends do not pay attention at first, and wait until the later occurrence of yellowing disease and other diseases to attract attention, in fact, if you do a good job of prevention from the beginning, you can avoid the occurrence of this phenomenon to a large extent, but if it happens, it does not matter, flower friends can solve it in this way.
Rhododendron leaves become smaller, most likely suffering from a disease called leaflet disease, or leaf shrinkage disease, the main symptoms are as follows:
1. The new leaves of rhododendrons become much smaller than the original leaves.
2. The leaves of rhododendron are rolled outward and deformed.
3. The leaves visible to the naked eye gradually turn yellow.
The main causes of rhododendron leaflet disease are as follows:
1. Lack of zinc in soil. Trace elements such as iron, which cause leaflet disease.
2. The potting soil planted with rhododendrons is too heavy, and too much chemical fertilizer causes the potting soil to be compacted and the air permeability is poor, which is also one of the causes of rhododendron leaflet disease.
3. Planting rhododendrons with pine needles and other media is not fully decomposed, which hurts the root system and leads to leaflet disease.
4. Too much fertilization burns to the root system, resulting in leaflet disease.
5. Potting soil is too dry or too wet is also one of the factors that cause rhododendron leaflet disease.
1. The potting soil requirements for the maintenance of rhododendrons are loose and breathable acidic soils if used with rotten leaves. Pine needles and other media with soil, must be fully decomposed and used.
2. The potted soil of the conservation rhododendron can not be too dry, under the premise of good soil drainage, the rhododendron still likes the relatively moist soil, so it can not be short of water for a long time, and the lack of water will lead to poor growth of rhododendrons and produce leaflet disease.
3. The potting soil of the conservation of rhododendrons can not be too wet, if the potting soil is too wet, it may lead to water accumulation, so that the root system of the rhododendron is damaged, and the potting soil is too wet for a long time, which will make it difficult for the root system of the rhododendron to absorb water, resulting in leaflet disease.
1. Before the new shoots of rhododendron flowers are given a thousandth of ferrous sulfate solution, if it is serious, you can use one thousandth of ferrous sulfate and one thousandth of zinc sulfate to irrigate every half a month.
2. Often loosen the soil of the rhododendron pot to make the soil loose and breathable.
3. Fertilize the rhododendrons to be thin and diligent, must not be thick, fertilize as much as possible with organic fertilizer, because chemical fertilizers are very easy to cause soil compaction, and will make the original acidic soil alkaline.
4. Water the azaleas reasonably, so that they do not dry or water, and water thoroughly.
In addition, flower friends should also pay attention to the fact that rhododendrons can change the soil once a year or two under normal circumstances, but if it is a leaflet disease caused by potting soil compaction, as long as the temperature is not too high or too low, you can change the soil for the rhododendron at any time to improve the soil and treat leaflet disease. Flower lovers can give the rhododendron soil when changing the soil: 5 parts of fermented saprophyll soil or pine needle soil, and 1 part of coconut bran. 2 parts of river sand. The soil thus formulated is acidic and relatively loose and breathable, which is conducive to the recovery of rhododendron leaflet disease.
Perhaps some flower friends will think that autumn is not the best season to start rhododendrons, in fact, some perennial flowering varieties of rhododendrons, as long as they are relatively cold, but not cold at a temperature, the same can bloom well, but flower friends should also pay attention to observe whether rhododendrons suffer from leaflet disease, if you change to leaflet disease, you can follow the above method to solve.
What else do you know about rhododendron leaflet disease that you would like to share with your flower friends? Feel free to leave a comment below to discuss.
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