Certified GKH Gardening Expert
This appears to be a pH issue, but you should check nutrient levels along with testing pH.
Here are some articles that will help:
Someone suggested it might be root rot from the soil not draining. The soil seems to be draining fine though, but I'm wondering what the symptoms are of root rot in a leucadendron? Do the leaves curl? Anyone know? I greatly appreciate any suggestions!
Well, I tested the soil and it's got a pH between 6.5 and 7. I'll try increasing the acidity a bit, but that doesn't seem that far off. I wonder if the problem could be related to watering. Any other ideas would be appreciated!
Thanks for the advice and pointers. I've never tested the soil but will get a kit and do so.