Answer: Hydrangea anomala, the climbing hydrangea, grows in full sun to part afternoon shade. With so little sunshine, it won't bloom or will bloom only sparsely. It climbs by holding onto surfaces with aerial rootlets so it would need a trellis to cling to. If you allowed it to cling to the siding of the house, it could damage the siding.
Since the site is mostly shady, you might want to consider a different climbing vine such as Jasminum, Lonicera (honeysuckle), or Trachelospermum (star jasmine). Each of these plants will grow in the shade, and all will require support of some kind to keep the vines from invading the spaces between your siding.
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