Can you show some closer pictures of what it actually looks like now? We can't see the stem or any other details in the photo above to say what/if anything, is wrong with it. Once we can see some close ups people will do their best to help.

Here are a couple shots of it:

Ok, looking at the pix, it's clear that it is very dry!!

Thank you! I'll move the coreopsis away and keep it watered well. I don't think we planted it deep enough either.

Clematis like "cold feet". That means the vine likes good sun , but the roots (feet) like to be shaded, (cold). Not always a necessity, but good to do if you can.

Actually the above is a bit of myth :-) Clematis do not need a "cool" or shaded root zone. What they really need is a consistently moist root run. Often shading will accomplish this by reducing soil evaporation due to sun but a good layer of mulch will accomplish the same thing, as will planting some shallow rooted perennial or groundcover at the base.

Hi, I am having a similar problem. My clematis is turning all yellow. I've lost 3 so far and looks like I'm losing another . I have a year old clematis 20 feet from the dying one and it's doing well. I also grew one for 10 years in my previous house without a problem. I'm starting to think it's planted to shallow. Can I replant it or will that make things worse? I have heavy clay soil, but when I plant anything. I add a big bucket of dark organic soil all around the roots and add more soil on top every spring/summer. I gave it some rose food as well as alfalfa pellets and molasses thinking it's lacking nutrients. This is an area where the weeds never stop. I do need to put down a weed block fabric and more mulch, but I don't think that's the problem. Please help. Thank you

When you are working with a heavy clay or poorly draining soil, you have to be very careful about amending any plantings.........amended planting holes in clay soils act like buckets. They hold moisture in with all that rich amended soil and the clay prevents fast drainage and you end up with a bucket sized hole of wet muck that leads to root rots.

Unless you can amend that entire planting area - not just the planting hole - you are better off to dig a very wide but quite shallow planting hole and plant high....so that the top of the root ball is above grade. You still want the vine itself deep so you mound good soil up to the appropriate level, creating a small berm. Or you can create a raised bed in that area if that is easier.

While the coloring on your vine is somewhat pale, it looks quite healthy otherwise.

What GG48 said and no weed cloth. It tends to interfere with movement of water and nutrients, and the weed roots will grow into it making them more difficult to remove. Weed thoroughly and then put down more mulch. The secret to keeping weeds under control is a combo of mulch and not allowing weeds to go to seed, so try to remove while still small.

Looks like clematis wilt to me, a fungal disease special to clematis. It can be fatal, but I have had plants recover by removing the dead parts.

There is NO indication of clematis wilt in that photo!! Also wilt is attributed to several causes, not just fungal, and it is NOT fatal. I've grown many, many vines that have recovered from it.