Answer: The puckering can be weather related but there's also a virus that can attack lettuces in cool, wet spring weather. Puckering is the first sign, vein clearing is the second. If the veins in the leaves look normal, your lettuce is okay. If the veins begin to clear (you'll know it when you see it), the plant is infected and should be removed. We can't accept photos through this forum but if you can post it on one of the photo hosting websites and send up the link, we can check it out. Good luck with your lettuce.
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