Does climbing hydrangea need a trellis?
Be sure to use a hefty, substantive trellis that won't need replaced in a few years. Climbing hydrangea vines are heavy once they're full grown. ... Although climbing hydrangea grows in full shade, it flowers best when it receives some sunlight.
Does hydrangea Petiolaris need support?
Climbing hydrangeas (Hydrangea anomala subsp. petiolaris) are large, heavy vines that need substantial support. ... You can leave drying flower clusters on the vine after they bloom, and they will keep their shape and add interest, even after the foliage begins to fall.