Raspberry plant in a container
My raspberry plant leaves are turning from dark green to light green. What should I do?
Certified GKH Gardening Expert
They are starting to lack in nitrogen. This could be because there is little food in the potting mix, or the pH could be a little too high. Either way, it can be hard to grow brambles such as this in container. You may have to transplant them by next year.
You can add just a little iron sulfate, and dolomitic lime to fix the soil. This will buy you some time while in container.