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Q.Yellow Spots On Rex Begonia

Zone SM25HS | Anonymous added on May 25, 2022 | Answered

Hi there, I bought a wet stick and propogated an indoor Rex begonia. Its tiny but started to notice some yellow spots. I don’t know if its a pattern of the plant or its some kind of insects. Could you please help? Also, suggestion on what can be done please? I love this variety and can’t loose it. Any help is much appreciated

A.Answers to this queston: Add Answer
GKH_Susan
Certified GKH Gardening Expert
Answered on June 6, 2022

Yellowing leaves can indicate improper watering, so check that first. Begonias are easy to overwater. Do not let the leaves remain wet. Rex also needs high humidity, so you might consider a pebble tray. Since those look like raised bumps in the photo, another possibility is edema.

Here is more:

https://www.gardeningknowhow.com/plant-problems/environmental/treating-edema-in-plants.htm

https://www.gardeningknowhow.com/ornamental/flowers/begonia/growing-rex-begonias-indoors.htm

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