Q.looks like blackspot
I have black spot and black powdery mildew on my trumpet vine. What can I spray on it to kill these issues i’m having with this?
I use a product called Green Cure. It is an earth friendly fungicide. You can get it on-line at Amazon.com. The Cure Rate is two of the scoops that come in the product jar per gallon of water. It works very well. Spray every 7 to 10 days for at least 4 sprayings. The black spot typically does not ever go away on the older foliage but should not show up on the new foliage.