What diseases affect geraniums?

Some of my geraniums have scale like spots on the underside of the leaves. The leaves turn yellow.

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1 Comment To "What diseases affect geraniums?"

#1 Comment By Downtoearthdigs On 10/13/2015 @ 2:39 pm

Your plants could have a pest issue or Virticillium can attack geraniums.
In the case of verticillium the plant would need to be disposed of.

Likely the plant just needs some watering adjustment and a Neem Oil treatment generally takes care of most insects or fungus.

Here are some links for you.

https://www.gardeningknowhow.com/ornamental/flowers/geranium/geranium-yellow-leaves.htm ^[1]
https://www.gardeningknowhow.com/plant-problems/disease/verticillium-wilt-treatment.htm ^[2]
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm ^[3]

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URLs in this post:

[1] https://www.gardeningknowhow.com/ornamental/flowers/geranium/geranium-yellow-leaves.htm: https://www.gardeningknowhow.com/ornamental/flowers/geranium/geranium-yellow-leaves.htm

[2] https://www.gardeningknowhow.com/plant-problems/disease/verticillium-wilt-treatment.htm: https://www.gardeningknowhow.com/plant-problems/disease/verticillium-wilt-treatment.htm

[3] https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

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