Climbing roses are divided into climbers and ramblers, depending on whether they have straight and rather erect branches able to supporting themselves, or long creeping lianas that need support.
In both cases, a good climber should have the largest number of branches that start mostly from the base and in the case of espaliers or walls, in the pruning, you will have to distribute the branches in a fan-shape, to use the full length of these to produce flowers.
The best flowering for climbers, both ancient and modern types, takes place on the branches of the previous year. For this reason, depending on the structure or the type of growing adopted, it is good that the branches have a horizontal position to allow a better number of buds, located along the branch, to bloom.
It takes at least 2 years for a climber to begin to shows its beauty. Usually these roses have a very vigorous and exuberant growth in the first 3-4 years, and then the plant’s metabolism is influenced by pruning.
For many historical varieties and ramblers the vigor and growth does not decrease. What follows is a typical example of an ideal creeper in an espalier:
- eliminate dry, weak, too old and unproductive branches
- shorten all the side branches that bloomed the previous year with 2-3 buds
- eliminate old branches (twisted, too ramified and weakened) near new vigorous stems that can replace them by arrangement and size
- arrange the long shoots of the previous year in a fan pattern, trying to have all the branches in the structure well arranged and equidistant
- avoid leaving the new growth in an upright position and do not shorten it where it exceeds the support structure
- to cover wide structures, use varieties with soft branches or large shrubs which they are perfect and functional for development, for the ideal result
- trimming the top of the longest branches at the end of the pruning.
- the percentages of the vegetation to be removed may vary depending on the age of the plant and the effect to be obtained. 35-40% of vegetation is eliminated for maintenance pruning. For pruning on non-flowering rose bushes of great development (Bancksiae, rambler and other botanical roses), green prunings are advisable at the end of flowering, or prune them every 3-4 years