Best Was To Correct Discolored Lettuce?

Question

On both arugula and romain in garden.

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Answer 1

That looks a lot like leafhopper damage. They come in many shapes, colors, and sizes. I would use an insecticide like azadirachtin. This is an extract from neem oil, and is my go-to.

https://www.gardeningknowhow.com/plant-problems/pests/insects/leafhopper-control.htm

https://www.gardeningknowhow.com/plant-problems/pests/pesticides/azadirachtin-vs-neem-oil.htm