Not any that are on the OP’s list…but as far as plants go, you can’t leave these off the list of ‘freebies’...
I’ve used this, it is a bit fiddly to get to grips with, but the results are excellent. http://graphics.uni-konstanz.de/~luft/ivy_generator/ And still free to use by the looks.
That’s a bit of an understatement..browse through the gallery pics. The results can be beyond that…
I’ve bought Lisas Botanicals set COTTAGE PLANTS 1 but when I save as OBJ and import into Bryce I cannot train the plant where I want it - under and across the window.
You will have to do any posing/morphing/etc on it in D|S and then export the posed item as a new obj. The base obj is just that, no morphs or anything.