Crossing Perennial Hibiscus
Hello everyone I'm quite new to growing Perennial Hibiscus I have started several varieties such as H. aculeatus, H. coccineus,H. diversifolius, H. syriacus and H. trionum and some others like H. sabdariffa, H. cannabinus and H. acetosella I know that some of these are used not only as food leaves and flower and unripe seed pods, but for fiber also, I'd like to find out which of these species will cross with each other and if they will produce a worth while Hybrid as I notest that some types that are grown from seed are very weak looking, also will plants grow from cuttings be stronger and have better root systems? I'm interested in finding seeds from H. greenwayi, H. radiatus,H. furcellatus and H. mutabilis. Can someone give me a heads Up on these species along with some of the Perennial Australian varieties like H. splendens? Thank you for any help that that I can get.
George W. Zone 5 Missouri