Fertilising winter / early spring flowerers?

I've got several Winter and early Spring flowering Clematis and I never feed them until they are forming buds and only feed them weak Tomato Feed at that time. But to the fact that I have around 115 or more different Clematis I then feed during the Spring and Summer with general purpose liquid feed one week and Tomato Feed the next..........seems to work. I have a Trellis entrance to the garden which on on either side of it around 20-25 Clematis of Spring/Summer flowering different varieties and those get fed with Miracle Grow fortnightly from Spring onwards.
If you want to feed Hellebores, Cyclamen, then I would use low nitrogen based feeds now but, as you said, you could feed them during the early Summer to build up reserves.

 

Definitely not, Jack. I lost a fair few Clematis before I started to understand what they liked and how to keep them for more than a year!! I'm an impulse buyer, like a lot of the Gang, but I do have a liking for Clematis so if I come across one I like. and haven't got. then I'll buy it but I do have to like it!!!

There are many "expert" opinions out there, Jack, but I can only tell you what has worked for me over the years.

Do you know it's variety, Jack?

You're more than welcome

 

ClematiS X cartmanii hort "Avalanche"


Yep, that's a nice one, Jack. Evergreen Clematis can also be subject to sun scorch and also drop a few leaves but evergreens will do that. Wilt is more rampant in the large flowered hybrid Clematis and current thought is that the way Clematis are cultivated can cause Wilt.
I've found first planting them deeply and keeping the roots moist for a month or two gives them a good chance of establishing. They say that cutting back a Clematis suffering from Wilt to the ground will help but I've found it's no guarantee.