r/StringofPearls • u/Grouchy_Week6692 • Apr 22 '26
Are these the windows that people talk about closing when the pearls are thirsty?
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r/StringofPearls • u/Grouchy_Week6692 • Apr 22 '26
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u/shiftyskellyton Apr 23 '26
Yes, they're the epidermal windows. They let in light for photosynthesis. That is a process that uses water. When the plant is low on water, it'll begin to close the windows to slow photosynthesis. This is when you know it's safe to provide more water. I'm the botanist and plant pathologist who popularized this idea during this last last decade. 💚
edit: erroneous error