Ask a Question forum: meyer lemon tree with crystalline substance on leaves

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Name: Honey
9a (Zone 9a)
Million Pollinator Garden Challenge
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honeyx4
Oct 18, 2017 8:55 AM CST
I have a meyer lemon tree that has leaves with a white substance on the underside. This tree grows well produces fruit but I can tell something is wrong. there's this substance on the underside of the leaves and a blackish fungal looking stuff on the top of the leaves. There is fruit on the tree but its slow to ripen or turn yellow and some of the fruit has started to spontaneously rupture. The fruit also looks pitted discolored. I have treated it with neem oil in the past hoping for a less toxic insecticide but I think I may have to give up and get something stronger.

Does anyone know what this is?
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Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
Oct 18, 2017 1:12 PM CST
Maybe Woolly Aphids.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

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Name: Honey
9a (Zone 9a)
Million Pollinator Garden Challenge
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honeyx4
Oct 18, 2017 1:26 PM CST
Thank you for your reply, I will be more agressive with the insecticidal soap.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
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DaisyI
Oct 18, 2017 1:35 PM CST
Make sure you spray the bottoms of the leaves as that is were the bugs are.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

Webmaster: osnnv.org
Name: Carol
Santa Ana, ca
Sunset zone 22, USDA zone 10 A.
Charter ATP Member Hummingbirder Lover of wildlife (Black bear badge) Orchids Region: California Plant Identifier
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ctcarol
Oct 18, 2017 5:47 PM CST
The soap will work, but you will need to repeat until you kill the following generations. Citrus are an ongoing battle with bugs.
Name: Honey
9a (Zone 9a)
Million Pollinator Garden Challenge
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honeyx4
Oct 19, 2017 6:14 AM CST
ctcarol said:The soap will work, but you will need to repeat until you kill the following generations. Citrus are an ongoing battle with bugs.


You're right about the ongoing battle :sigh:, it's not for the faint of heart. I have a lemon and a lime tree and every year if its not one thing its another.
I want to try and put up a good fight, when I get fruit its so much juicier than anything I buy at the market.
Name: Carol
Santa Ana, ca
Sunset zone 22, USDA zone 10 A.
Charter ATP Member Hummingbirder Lover of wildlife (Black bear badge) Orchids Region: California Plant Identifier
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ctcarol
Oct 19, 2017 6:21 PM CST
Same here!

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