What is this on Star Jasmine?
Is this a reaction to the high temps, scarring, accumulated 'nectar' or caused by some sort of pest on the vines of my Star Jasmine? This is an outdoor potted plant on my patio in Southern California. I've checked the leaves and do not see any pests, holes or discoloration. I don't overwater ... possibly underwater if anything. I appeciate anyone's insight!