The hydra part of Hydrangea does refer to water, but the rest of it refers to a vessel, jar, jug or similar [Greek rather than Latin] and is attributed to the general shape of the flowers and buds - a water carrier. While they do like plenty of moisture, they're pretty similar to many shrubs and climbers in that respect. It's the soil conditions that are more important. It's definitely a case of over pruning @jtirenna13714, as many of us said. If left alone, and given a bit of extra help - ie some mulching with organic matter when moistened well, and enough moisture, it should come away. We can get away with growing them in sunnier sites here, even south facing ones, due to the climate, but the advantage of a shady site is that they don't dry out so easily which helps a good bit
It's a place where beautiful isn't enough of a word....
I live in west central Scotland - not where that photo is...
I would loosen the ties holding the trellis so they don't bite into the wood, which can cause problems. @Fairygirl is correct as usual, in that hydrangea means water cup (at least from what I was told years ago) and it's the shape of the seed pods and not because they need masses of water, although some species do like moist conditions.
Ours has several trunks that are thicker than your thigh but is 45 years or so now.
I remember a large one crashing down years ago, it was a beauty. Clearing it up was a huge job. It had to start again from a few feet it was so heavy. Luckily the huge root system soon got going and within a year it had started to refix and climb. It is the stems that grow forward that you need to be aware of as they carry the flowers.
I have worked as a Gardener for 24 years. My latest garden is a new build garden on heavy clay.
This isn't the greatest picture because it's not properly flowering at this point but it's the only one I could find. The windows aren't covered by it at all but they look blocked because of the depth of the plant.
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It's definitely a case of over pruning @jtirenna13714, as many of us said. If left alone, and given a bit of extra help - ie some mulching with organic matter when moistened well, and enough moisture, it should come away. We can get away with growing them in sunnier sites here, even south facing ones, due to the climate, but the advantage of a shady site is that they don't dry out so easily which helps a good bit
I live in west central Scotland - not where that photo is...
Ours has several trunks that are thicker than your thigh but is 45 years or so now.
It is the stems that grow forward that you need to be aware of as they carry the flowers.