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Geranium Plants

Q.Why do my geranium leaves turn yellow?

Zone 6 | Mariebianco added on June 25, 2014 | Answered

I have my plants on the window sill with light but not direct sun.

A.Answers to this queston: Add Answer
Answered on June 27, 2014

The first thing to check is soil moisture. Potted plants often show yellow leaves when the soil is too dry -- water is not getting to the leaves -- or too wet -- roots are damaged so they can't transport water to the leaves. When you water, pour on enough that you get a runoff from the pot. You don't need to pour it off if it's 1/2" or less. Before you water again, test the soil all the way to the bottom of the pot for moisture. You can use a pencil, dowel, or kebob skewer as if testing a cake; or use a moisture meter. The soil should be very slightly damp.
After you decide if soil moisture is the problem, think about light, soil, and mineral levels. This article has more information: https://www.gardeningknowhow.com/ornamental/flowers/geranium/geranium-yellow-leaves.htm

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