Ask a Question forum: Help with my Meyer Lemon plant

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Kim2904
Sep 15, 2016 2:56 PM CST
My lemon meyer plant is infested with something that look like scales?? Not sure but it grows only on the underside of the leaves, it's hard and stuck right on. Can't remove by picking at it. I'm been treating it with fungicide for last 2 weeks and also spraying water and dish soap mix but have not seen any changes. I've also notice that there are yellowing of the leaves and they are also falling off. Help!!
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Name: Elaine
South Sarasota, Florida (Zone 9b)
The one constant in life is change
Cat Lover Master Gardener: Florida Tropicals Multi-Region Gardener Vegetable Grower Region: Florida
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dyzzypyxxy
Sep 15, 2016 3:29 PM CST
Hi and welcome, Kim. It would help to know where you are, to diagnose what might be afflicting your lemon tree. Please fill in your personal profile with your location? It's the little person icon up in the blue side bar to the left on the home page.

It doesn't look too much like scale to me. The spots are too random and different sizes. Also, scales on citrus usually are on the stems of the newest growth, not on the backs of the leaves. So I think it is some sort of fungal infection.

The fungicide you've been using will most likely prevent any spread of the disease, so keep on using it according to the label directions. Remove any leaves that have spots once they start to turn yellow and throw them away in the trash, don't compost. Green leaves are still nourishing your plant even if they are spotty.

These sorts of fungal spot diseases are very common if you live somewhere hot and humid, and rarely cause too much damage to the plants, but they sure don't look good and you will lose leaves. So it's probably a good idea to begin using a fungicide regularly as soon as you see spots starting. Once the weather is drier and cooler you can probably ease up on the fungicide and see if it recurs.
Elaine

"Success is stumbling from failure to failure with no loss of enthusiasm." –Winston Churchill
Name: Carol
Santa Ana,Ca. (Zone 10b)
Sunset zone 22
Charter ATP Member Hummingbirder Lover of wildlife (Black bear badge) Orchids Region: California Plant Identifier
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ctcarol
Sep 15, 2016 6:15 PM CST
It does look like the scale I get on citrus here in So. Ca., though mine hasn't been as bad this year as normal. You could start with Safer Insecticidal soap. If That doesn't work Bonide would be my next choice.
Name: Daisy
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
Sep 15, 2016 11:28 PM CST
Ack! Don't use Bonide if you plan to eat your lemons!

Try wiping the leaves with cotton pads soaked with alcohol. If its scale, that will take them off.

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