I am 100% with @RichardRoundTree , but I sure hope we are wrong. Most have seen my story, but here it is. You might like seeing the photos. Most people assume herbicides would just cause leaves to wilt, turn yellow, and/or fall off. But 2, 4-D actually leaves them green but causes them to grow in an accelerated. curly shaped way- at least for a while. Note the photos in the first post on my thread.
Good luck! Hope we are wrong and it is aphids or something else.