The things one learns from an allotment. I'm fairly certain this is what is afflicting some of our new raspberry canes. We planted them last year. One didn't make it through the winter. Another has had a tough start because the family man-with-strimmer keeps razing it to the ground when he powers by on grass-cutting duty. This year, as the canes have started to really pull away, it's become very obvious that all is not well with two of them - perhaps significantly the canes nearest the grass edge of the plot.
So we have healthy canes:
And these pale yellow specimens:
By chance this week I received free with an order of other soft fruit from the wonderful Ken Muir a book called 'Grown Your Own Fruit'. Although I must have read about yellowing raspberry leaves in the other gardening bibles I own, it took the nice photos of raspberry ailments in Ken's book to make the penny drop. I gather I now need to apply the wonderfully-named Flowers of Sulphur.
Glasgow is Happy
4 hours ago