U of M Gardening Information: What's wrong with my plant?

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Weigelea > Leaves > Curled, cupped, or distorted leaves

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Credit: Randy Nelson, University of Minnesota
Credit: Randy Nelson, University of Minnesota
Credit: Randy Nelson, University of Minnesota
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Plant growth regulator herbicide injury
(2,4-D, Dicamba, etc.)

Leaves, stems, and petioles are twisted, distorted, and/or cupped
Leaves may appear thick and leathery with parallel veins
Youngest tissue at branch ends affected
Distorted growth accompanied by or followed by leaves that turn brown or yellow
More information on plant growth regulator herbicide injury...

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Credit: M. Grabowski, University of Minnesota
Credit: Chazz Hesselein, Bugwood.org
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Non-selective herbicide injury
(Round-up, Kleen-up, and other glyphosate products)

Yellowing, wilting, browning leaves and eventual death of foliage and plants
Damage usually appears first in new tissues
Shrubs sprayed during the summer or fall may not have noticeable injury until the following season when leaves appear as stunted, narrow, strap-like, and chlorotic

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