
In fact, the only plants other than the tomatoes and the pole beans that I've provided support for are the few clematis I have and a variegated climbing honeysuckle. All other plants must be self-supporting!
Sometimes this stance on self-supporting works out and sometimes it doesn't.
I have several large viburnum including this Viburnum dentatum 'Synnestvedt' which is sold as 'Chicago Lustre®'.
Out in the perennial border, this tall sedum, Hylotelephium spectabile, variety unknown, is upright, as are the asters behind it.

But just just a few feet away, this tall sedum is all floppy.

To increase the odds that a perennial plant like tall sedum or asters will stay upright without staking or other support, some gardeners cut them back by about half in mid spring, which encourages branching and overall stockier growing. I cut back my asters, but don't cut back the tall sedum.
I actually don't mind the floppy plants. They might say "lazy gardener can't provide some decent support for her plants" to some people. But to me they just say... "floppy time, can't touch this"!
So the question is, do you try support every plant that flops over in your garden, or do you leave them be?
Comments
Last year I pinched Matrona sedums and they flopped. This year I didn't pinch them and they're nice and upright. Next year I won't pinch them, and they'll probably flop. ;)
I had to giggle at Rose's comment. By late summer I also either don't care or have run out of stakes. In moments when I do care and have run out stakes, there are always plenty of maple sticks lying in the garden here that can get the job done.
Your Viburnium looks so healthy and full od berries. The birds are going to love it!