Two years ago our the leaves on our garden phlox rolled up and looked like green beans. Same thing last summer. They remain green and plants bloom. I can\\\\\\\'t find insects or fungus. What do I need to do this spring? Sorry no pictures.
Certified GKH Gardening Expert
Has the sunlight changed in this area? This can cause rolling of leaves. I really suspect a pH imbalance, though. This can be dealt with by adding dolomitic lime to the area. And if you suspect a fungal infection at all, then you will want to add wettable sulfur to the area as well. This will kill, and prevent any infection from starting.