Introduction: Since entering August, the troubles of flower growers have increased day by day, not only the maintenance and management of potted plants has become a problem, the preparation of changing pots for plants has to be prepared in advance, so busy time, some people have ignored the dahlias planted at home, the adaptability of this flower plant is very strong, especially suitable for planting in the garden, waiting for the flowers to bloom into a sea of flowers, used as a decorative garden, etc.
However, this flower plant likes a warm environment, but does not tolerate high temperature climate, so since entering the middle volt, the external environment is very unfriendly to its growth and flowering, especially after the rainstorm, the leaves of these plants have inexplicably withered and yellowed.
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Some people may feel that it is a natural metabolism, so they do not take this matter to heart, and then, as time goes by, such a situation becomes more and more serious, we can be cautious, for the dahlia that has begun to suffer from severe yellow leaf blight, what should we do, how to adjust?
The first step is to seize the time to trim
The diseased stems and leaves have no value to retain, because their existence will only deplete the nutrients that the mother plant needlessly consumes, and will also reduce the ornamental value of the pot, of course, if left unchecked, it will continue to spread and spread to other healthy plants, resulting in large-scale casualties slowly, resulting in the destruction of the small garden that the flower keeper has worked hard to plant.
Therefore, we found that the diseased part must be pruned in time, leaving no one, and the pruned diseased branches and leaves need to be thrown into the garbage can to be discarded, and can not be diverted for other purposes, especially for flower raising, because the bacteria hidden in it will continue to multiply without being completely eliminated, and the plant will be harmed.
The second step is to build a shelter on the spot
Simply pruning out the withered parts cannot continue to avoid the negative impact of the external environment on the plant, so we need to build a shelter on the spot to help the dahlia seedlings bathed in the sun at noon to have a relatively suitable shelter.
Of course, the built shade does not need to form a closed space, but only needs to properly reduce the direct light of the strong light. Therefore, some discarded window screens or bed sheets can be hung above the plant, and the light transmittance of the cloth will not hinder the branches and leaves of the plant from obtaining light and maintaining their own photosynthesis.
The third step is to adjust the water and fertilizer
In the high temperature and sweltering climate, we need more watering, less fertilizer, to meet the growth and metabolism consumption of plants, while avoiding the phenomenon of water accumulation in the soil, damaging the health of plant roots. Especially during periods with more rain, the supply of water and fertilizer can be directly stopped, so that the flower roots buried deep in the soil can draw their own water and nutrients from the depths of the soil.
In addition, we must always pay more attention to the changes in the climate, find that there is a downward trend in the temperature, you can prepare more homemade fertilizer, so that when the temperature continues to stabilize below 30 degrees Celsius, more than 20 degrees Celsius, we can change the original irregular topdressing method to regular quantitative topdressing, and additional water-soluble fertilizer should follow the principle of diligent application of thin fertilizer.
In addition, the agglomerated soil is very unfriendly to the roots of the plant, so the plants planted on the ground also need to occasionally loosen the soil, helping the roots buried deep in the soil to breathe freely and make the soil loose and breathable.
Conclusion
There is a great difference between ground-grown dahlias and potted plants, in addition to the above, do you know what other aspects are different?
【Picture from the Internet】
【Copywriter】Muhai Horticultural Old Man