Hello. For few years now I have 5 simple phalaenopsis orchid plants. They grow really nicely, look very healthy etc. They all frequently sprout flower stems but every time, with every single one of them, when flower buds come to size of approximately very small pea, buds turn yellow and fall off...it doesn't happen at once, smaller buds on the stem remain green and keep growing till that certain size when they eventually turn yellow, one by one...So far I was unsuccessful in finding any answer why this is happening. If anyone have na idea and can help, I will be extremely grateful
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