Yes all kinds of annuals and ornamental plants grow very well in hydroponics and when they get root
bound in the solo cups you can transplant them to dirt pots or your yard.
I will be planting some annuals soon around the hydro system I have around my pool and will post
pictures.
Start the
seeds in vermiculite then transplant to your system because seeds will get flushed before
they have time to sprout.
Ron