Is this a new climbing rosebush that you just planted or is it an older bush? If it is a new bush, then the rosebush may be getting too much nitrogen fertilizer which creates loads of foliage and reduces bud formation and blooming. If it is an older established climbing rosebush, it may be a grafted rosebush and upper part has died and the shoots coming up from below ground are the root stock rose. The root stock canes are quite vigorous and grow very well with lots of foliage. Some do not bloom for a couple years. Also some older roses bloom on the "old wood"/the previous years growth. So if pruned too heavily they will not bloom until the next year if not pruned too heavily. Here is a link to an article I wrote on rosebushes not blooming that may be helpful to you as well: https://www.gardeningknowhow.com/ornamental/flowers/roses/no-blooms-on-roses.htm
Answered on July 4, 2019
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