snowball bush falling can I trim now?

You prune them after the finish flowering, which I assume they have by now. Without seeing the bush it's hard to say how much you should be cutting off. Some you can trim pack a foot or so, others try cutting back further. I'm not sure you'll get regrowth from the naked stems, but it's worth asking a few to give it a try. If the bush is real dense at the ground with stems, you can cut a few off at the ground level.

It's hard to say what you should do without seeing age, density and overall health.

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snowball bush falling can I trim now?

my snowball bush is falling down on my A/C unit can I trim the canes back with out hurting the bush? The canes are at least 6 foot and do not have any foliage until at least 3 foot up from the ground, then have leaves and blooms, the heavy rain and wind and weight of the blooms pulled them down

Raspberries form on one year old canes. If you remove this season's new growth, production will be limited. Last year's canes can be removed with no problem. You should trim your bushes right after the season's berries are finished and leave the new growth alone.

This isn't the best time to cut it back but I would under the circumstances. I would keep it well watered for a few weeks. good luck