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Jan 16, 2019 11:46 AM CST
Thread OP
Hello! I have a peperomia tricolor that is not doing very well. I keep it in a pot with well draining soil, a hole in the bottom, as well as gravel to help with drainage and humidity. It is placed with an artificial grow light but has recently been developing spots on the leaves (see in the picture), so I reduced the light to a lower light, although that never seems to do anything. I try to water it when it is needed... but nothing I do seems to help this plant grow. Also the picture is from a couple of weeks ago and it is now down to three leaves. I did notice that the pink color around the leaves has faded, making me think it needs more light. But I was thinking maybe the spots on the leaves were sunburnt.
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Jan 18, 2019 10:41 AM CST
Name: Sally
central Maryland (Zone 7b)
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I think it's too moist and not enough light. I think sunburn is impossible with a grow light.
Plant it and they will come.
Jan 18, 2019 11:40 AM CST
Name: Will Creed
Prof. plant consultant & educator
The roots are dying probably because the soil is staying too moist. Having a drain hole and using a porous potting mix are good, but not if the pot is oversized. If you unpot it carefully, I think you will find there are very few if any healthy roots remaining.

If there are still some healthy roots, then move you Peperomia to the SMALLEST pot with a drain hole that will accommodate the roots and just enough porous potting mix to cover them. The alternative is to take a cutting and root it in water and start from scratch.

Depending on the grow light used and its proximity to the plant, it may not be providing enough light. It is better to keep a Peperomia close to a window where it will get natural light.
Will Creed
Horticultural Help, NYC
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