Hi all, Planted 3' Bluebird ROS couple of months ago and was doing well up until a month ago when leaves began yellowing and dropping. It begins with a green leaf, then ONLY the veins turn completely bright yellow, followed a number of days later with the rest of the leaf looking brownish/yellowish, while the veins remain bright yellow. Eventually the entire leaf yellows and the tips turn brown and curl and then drop. I have checked the stems, the leaves, undersides, and the buds, and did not notice any insects or their eggs/dropping anywhere. I should add that it receives plenty of sunlight, too. Should I remove the leaves? Spray the plant with something? Please help! I have looked all over the internet and found nothing with regard to veins yellowing. Thanks!