I have multiple jasmine vines which I planted this early summer. I noticed the vines have been thriving; however, just today noticed orange colored leavers on the jasmine vines. It generally looks like it might be on all the 15 vines I have. We have an irrigation system, but due to the high temperatures as of late, have been giving them extra water on the days they are not receiving irrigation. Could this be the cause of the changing color? Also noted some little tiny black spots on the leaves which have changed. Is this rust or is it to much watering? Should I pluck the leaves?
You may have a nutrient deficiency.
The article below will give you a good coarse of treatment.
You may also want to use Neem Oil on the plant, this can protect against both insects and fungus as the plant is stressed.