Greetings~

I purchased this Red Fury Mandevilla vine from a greenhouse about 1.5 months ago. I didn't really want it because it was the last one that had a yellow leaf or two on it, but buds were ready to pop. I explained to the owner how it looked a little sick...her reply, "oh just fertilize it, it will come out of it". Like a dummy I fell for that line. It has been sickly every since. I purchased to plant at my mailbox. Should I go ahead? Is there anything I can do for this poor vine? Look at the leaf to see the disease it has.

Thanks for your time.

Here is a link that might be useful: Sick Mandevilla