Brown and Scaly along leaf veins
Any idea's on what this is?
I've about 4 different types of tomato plants. All were doing really well. All inside and in pots.
A few weeks ago Every single one of one type's leaves started wilting, at the same time regardless of plant size.
This only happens on the older stems, working bottom and up. Prior to them wilting they are developing this scaly brown on the underside of the leaves, along the veins.
All my other tomato plants are thriving.