Posted: 09/06/2015 at 09:22
I think you're confusing me with Busy Lizzie Dove. My climbers and ramblers are all in the ground. I do have roses in pots but not climbers. Mine are either new ones I'm nurturing or else old ones I've had to rescue from the hurly burly of life in my very exposed borders. All doing very well for now.
I agree with others that these roses need to be potted on so they can grow roots strong enough to support the top growth and make more. Professional rose growers put theirs in tall, square pots about 30cm high and 12 to 5cm wide to grow on for sale so try something that size to start with. Some roses just have a climbing gene. I, on teh other hand, have a climber which is determined to be a shrub rose.
I think the best thing would be to give it a framework of trellis or an obelisk and try to bend the stem gently down to make it lie as horizontally as possible and then tie in all the new growth to keep the main stem attached and wound round or across the chosen support. I gave this advice to a friend of mine who has planted a rambler with an obelisk this spring and it is now sending up all sorts of short vertical shoots with flower buds on them while the leader gets longer and is tied in continually so the technique does work.
If such a support is not possible, cut the lead stem back to just above a pair of leaves lower down and see if that makes it produce side shoots. I would cut it above the 4th or 5th pair of leaves and at an angle so rain water can drip off and not sit and rot the end.