Do you know what might be causing my potted bay trees to look like this? And if so, what do I do to rescue them? Thank you

Question

Thank you!

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Answer 1

Check underneath the leaves for a grayish white insect. "Bay Suckers" are sap suckers and can be remedied with a natural pyrethrum or horticultural oil.

Another possibility is desiccation of the plant through improper watering, dry spells, cold spells.

https://www.gardeningknowhow.com/edible/herbs/bay/bay-laurel-turning-yellow.htm
https://www.gardeningknowhow.com/plant-problems/environmental/wind-injury-to-plants.htm