I only have a basic understanding of this stuff, but with hybrid
plants, it may depend on their hybridization whether or not they will
seed 'true to type'. It's a luckydip. Also, there are F1 breeds which can only be reproduced by specific crossing of two others. So, in short, if your
plants are hybrids, the first generation may throw back to one of the parent varieties. If they are F1 hybrids, then they most certainly will throw back to some other variety. Possibly just some mongrel strain which has crap
flowers or whatever.
seed saving clubs save heirloom varieties and these are the best for home gardeners to save. You know they will breed true to type. I'm sure there you could find a
seed saver network you could access for your
seed which you can then save for future years. They often operate on mail order and have catalogues etc. I use one for my vegie
seeds and am now saving
seed from a few pumpkins, tomatoes and others.