I think it is because mushroom compost is rather alkaline, from chalk added, and this makes it harder for raspberries to obtain magnesium, resulting in yellow veined leaves. I have the same symptoms here as my pH is 7.4 and watering with Epsom Salts is a help. We still have plenty of raspberries!
Forum Info
- Registered Users
- 35,010
- Forums
- 10
- Topics
- 2,940
- Replies
- 10,417
- Topic Tags
- 567
- Empty Topic Tags
- 2,261