Phalaenopsis problem

Phalaenopsis problem

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Question: phalaenopsis problem

kind expert
my question concerns a phalaenopsis orchid that was given to me 15 days ago. I have never watered it, it is in a luminous position but not in direct sunlight, it is housed in a well heated room (25 °). I realized that a leaf was yellowed, collapsed and looked like a soup of water. I removed the leaf but I saw that even on the others they were formed like some
oil stains. The roots, flowers, stem and collar of the plant are intact. I do not know if I have been clear but I would like to know what it is and how I can intervene. Thank you so much

Answer: phalaenopsis problem

Dear Carmela,
the phalaenopsis are orchids of tropical origin, they come from southern Asia, and from the Asian islands of the Pacific; in nature therefore they are used to a decidedly different climate than what they can find at home, both in winter and in summer, even if they are moved to the garden.
Fortunately, these plants are quite resistant, and tend to survive, and sometimes flourish, even if the cultivation conditions are not the best.
To always have a healthy and luxuriant plant it is good to know its needs, and try to keep it as much as possible in a climate similar to that which it could find in nature.
During the winter our houseplants are kept constantly in a fake spring season, with fairly high average temperatures, very little environmental humidity and a few hours of daylight.
The few hours of daylight make the plant realize that it is in winter, and therefore enters a period of semi-vegetative rest; often we find orchids in nurseries that have long spikes of flowers even in November; these blooms are favored by cultivation in greenhouses, with artificial light.
For this reason, for an orchid in full bloom in winter, moving at home is already a shock, fortunately your phalaenopsis is in bloom at the end of winter, so the shock should not have been so intense as to motivate the yellowing of the leaves.
In any case, the fact that the plant is in full bloom means that it needs the care you would give to a plant in full vegetative growth: therefore regular watering, and regular fertilizations.
Then water your orchid whenever the substratum seems dry, avoiding leaving drained water in the saucer; supply very small amounts of specific fertilizer for orchids, every 15-20 days; if you do not find the fertilizer for orchids, rather than exceeding the mineral salts in the substrate, avoid providing fertilizer.
In addition to this, it tries to vaporize the leaves approximately every day, with demineralized water, to try to increase the environmental humidity, which in the home is never enough, given that the heating system dries the air very much.
The droplets you see on the foliage could be due to the presence of scale insects, in this case try to remove the insects and the eggs by cleaning the leaves with a damp microfibre cloth; perhaps the plant, given that it has just been donated to you, has been vaporized with a foliar polish, which does not allow the foliage to breathe normally, the cleaning with the cloth should also remove part of the product that occludes the pores of the leaves, improving the perspiration and even health.