I think that some people have suggested that if you prune off the flower heads throughout the summer then you will be encouraging more flowers for that summer. I haven't done this for the two summers that I've had mine in the ground, and I don't seem to have gotten a lot of new flowers after the early flush. I can see some new flowers coming along at this point but not a lot. Last season, by the time the later flowers came along, the frost got them before they really got to a bloom state. It's an interesting question about whether the deadheading will encourage new flowers this season.

Was your previous garden in zone 5? I'd be curious to know which hydrangeas you had that bloomed on old wood that you were able to get to flowrer. I've had luck with Blue Billow and Endless Summer, but that's about it for me in my zone 5.

But I don't see any reason that you wouldn't prune Endless Summer in the Spring and Fall just like you would have with your previous garden.

For me it's a really easy. The winters have taken mine back to the ground for me.

Good luck. Hay.

I've found that you can prune ES with no problem. It's very robust. I deadhead and prune back to major "intersections." While I'm not certain, I think pruning has stimulated growth.

I've always spared the clippers on my hydrangeas, but not these. And some questions posed by hayseed earlier in the summer has gotten me interested in testing the limits of pruning. We'll see if I have the guts. lol