I'm a fairly new clematis grower, planted a TINY (long story, mail order) Nelly Moser Fall 2014. With a hope and a prayer, was SO surprised it lived and grew spring 2015. Other things from same on line company did NOT come back. It grew last year, a couple vines. I cut it back to 18-20" as instructed so it would form a good root base that will pay off in the long run. This may not apply to you because you may have bought a much bigger, hardier/older plant in the first place. This year, It is looking really healthy and I was rewarded with my first (only so far) bloom.

Last summer, I bought a lovely lavendar (no ID) clematis in bloom with 4+ buds yet to open. It tripled in size and is GORGEOUS and profuse this spring. Other clematises purchased from Bluestone Perennials put in Fall 2014 are growing and flowering with a few blossoms this spring.

Belle de Woking

Is your plant mulched? How often do you water? Those would be the first things I would look at as far as yellowing of leaves

Val, thanks so much for your comments! Your clematis look great! It has been really dry lately and I forget to water that area and I have not mulched that area yet so you are probably correct on both accounts as to the yellowing. I will get the mulching done today!

Mine were not big at all and came up from nothing this year which really surprised me since I thought they were goners. I will have to figure out the groups and such so I can prune correctly.

Here is a photo of my Elsa Spath that just had her first blooms, so pretty!

val, your no ID looks like my HF Young which IME is an easy type 2.

Nice looking flowers!