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New leaves begin growing further apart, giving a sparse look. The plant produces lanky, weak growth and tries to stretch toward the light.
I classify “very low light” areas as one level up from “fully dark” areas, which would be rooms without any windows whatsoever or totally dark nooks. Very low-light spaces have windows, but plants kept in there aren’t able to see the sky at all.
“Low light” areas actually don’t seem that dark to our human eyes. In fact, most of our homes fall into this category. But for most plants, which use light to synthesize their nutrients, it’s just not enough!
Just like low light can seem pretty normal to us humans, “medium light” is actually quite bright to us. We’re getting into the pleasantly livable zone for houseplants here, where many understory tropicals can thrive and grow abundantly.
For houseplants, we define “high light” spaces as those that are getting close to giving the sensation of being outdoors. Plants can see a big patch of the sky from here, and they receive direct sun for a good few hours a day.
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