Q.What Is Happening To My Potted Bay Laurel Tree?
It’s been growing happily for twenty years but, in the last month the leaves have become yellow at the spines. I’m very fond of this tree! Any suggestions? Image below.
Certified GKH Gardening Expert
I see signs of deficiency. I'd check nutrient levels, first:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm
If you find that your shrub has a deficiency, then you can correct from there. Here are some articles to help you with its care:
https://www.gardeningknowhow.com/edible/herbs/bay/sweet-bay-leaf-tree.htm
https://www.gardeningknowhow.com/edible/herbs/bay/container-grown-bay-trees.htm