Q.Yellow leaves
At one end of a long border a mahonia charity, anenome huphensis and viburnum carlesii have all got yellowing leaves. At the other end of the border, the plants are healthy, including other anemones. Is there something wrong with the soil at this end of the border and what should I do about it?
Certified GKH Gardening Expert
These plants are suffering from a nutrient deficiency, most likely of magnesium and/or iron. See the below articles for how to supplement the soil with these nutrients. You may also want to have a soil test done so you know how much to apply and whether the soil pH needs correction.
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/fixing-magnesium-deficiency.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/epsom-salt-gardening.htm
https://www.gardeningknowhow.com/plant-problems/environmental/leaf-chlorosis-and-iron.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/iron-for-plants.htm
