for about 6 months I have a problem on this azalea, the leaves dry up slowly, at first I thought it was a fungus and I started to treat with wings every about 10 days, alternating with another ridomil fungicide by foliar way, but now I don’t know what to do, it has been repotted in full kanuma but nothing to do. I place the photos only of the leaves

Azalea

Dear John,

since the leaves of your bonsai azalea do not respond to the administration of broad spectrum fungicide products, perhaps it is worth trying to change fungicide; in the case of suspected root rot, we proceed by administering products based on copper, or Propamacarb (but there are dozens of them in the nursery, all valid); or the problem persists because the pathologies are in full development due to incorrect cultivation methods. Bonsai azaleas are beautiful small shrubs, which quickly take on the appearance of saplings; they are very cultivated because they have naturally minute foliage, and tend to respond very well to pruning, allowing us to make even small mistakes, which can be easily corrected in the following months. Cultivation is not the simplest, especially in the hot Italian climate; azaleas do not like prolonged drought or even severe heat. For this reason we tend to water them very frequently, trying to prevent the soil from drying out completely, even in the middle of winter; this is because the roots of azaleas tend to have a fairly superficial development, and are also very thin, and tend to dry out completely if the soil in which they are placed remains dry for a long time. Therefore, they are watered very regularly, every time the soil tends to dry out; to prevent the little soil contained in a bonsai pot from drying out within a few hours, the bonsai azalea pots should be placed in semi-shaded areas, where sunlight can penetrate only in the coolest hours of the day; to increase the ambient humidity, in summer, the foliage is also vaporized, in the early hours of the morning. Drought, even for short periods of time, can cause rapid drying of leaves and buds. In the same way that these plants fear drought, they also fear stagnant water; it is therefore essential to be able to water regularly, while avoiding to keep the soil always soaked with water; Generally, to avoid that the pot always remains wet, it is mixed with the kanuma of sand, and also a little universal soil, in order to obtain a fairly draining compound; this makes it even more important that watering is regular, but at the same time prevents excess water from stagnating in the soil, thus making it less likely the development of rot.

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azalea problem – Bonsai Questions and Answers

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