Would you please advise me on what might be causing these yellow spots, whether we need to have it seen professionally, and what I might do to stop it? Sorry, I'm a total beginner and we just bought this house with beautiful vine included.

Plant is still growing; new growth looks good. The spots are yellow and raised and sometimes go through the whole leaf. The ends of some of the vines are a bit discolored -- not much, but more of a browner shade of green than the rest of the plant (which might be normal for Wisterias?). It bloomed profusely and has leafed out better than it did last year. The spring has been dry and we haven't fertilized.