Posted: Yesterday at 17:30
I think maybe you're are being impatient Lola. If the've only been in one year they haven't really had time to put on lots of growth. I sugegst you tie or twist in any growth that's long enough so it doesn't get blown about during autumn and winter gales.
Next spring, feed the cleatis with proprietary clematis food which is available in good garden centres and will release nutrients slowly that encourage flowers. For an instant tonic, give all the plants a dose of liquid rose or tomato fertiliser then stand back and admire but keep an eye on new shoots and train them in as they get long enough.
If you like, you can make a zig-zag frame by winding extra wire up and down at 45° between the horizontal wires so that tieing in is easier but do this now or at least before new growth starts in spring. I wouldn't use expandable trellis as honeysuckle and clematis montana are all very vigorous and will soon prove too heavy for it.