Ask a Question forum→Squiggly lines and little dots on multiple plants

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Seattle, Washington, Pacific N
lisieux
Jun 3, 2020 10:43 AM CST
Hi! Does anyone know why these marks are showing on my leaves? Squiggly lines and little dots. It's on two different plants - dahlias and marigold. Is it too much sun, or pest, or something else? Looks like leafminer problem, is neem oil the answer? They're on an East-facing balcony in Pacific Northwest weather so they get sun in the morning. Thanks so much!
Thumb of 2020-06-03/lisieux/773630
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[Last edited by lisieux - Jun 3, 2020 10:47 AM (+)]
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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
Jun 3, 2020 1:24 PM CST
Yes, leaf miners. But, it may be too late to kill them. The little holes are exit holes.
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

President: Orchid Society of Northern Nevada
Webmaster: osnnv.org
Seattle, Washington, Pacific N
lisieux
Jun 4, 2020 12:35 AM CST
Ugh! Thank you so much. I inspected the leaves closely and some still had larvae on them. Spraying a lot of neem oil now...
Name: Sally
central Maryland
Seriously addicted to kettle chips.
Charter ATP Member Houseplants Keeper of Poultry Vegetable Grower Region: Maryland Composter
Native Plants and Wildflowers Organic Gardener Region: United States of America Cat Lover Birds Butterflies
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sallyg
Jun 4, 2020 5:26 AM CST
If you can see where the larva is still at the end of the trail, you can squish it. (not for the squeamish, but effective)
i'm pretty OK today, how are you? ;^)

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