These are often the most desirable seeds to have because they are old-school cool. The definition can vary, but generally these are the ones passed over back fences for generations, having arrived from the motherland on old wooden settler ships. They are original pre-1960 strains that have, over time proven to be quite stable and trusted and as a result are easy to save, like peas and beans. However, just because they were the best available in 1914 doesn’t necessarily mean they are best available today. It is a good idea to be open to all types of seeds, or you could find yourself limited in flavour or disease resistance among other things.
These plants take care of their own business and don’t need help from bees or anyone else. Tomatoes are a good example, as the male and female parts are within the same flower. All that needs to happen when the time is right is for the pollen to fall onto the stigma and the job is done.
These are the promiscuous plants. They don’t mind who pollinates them, just so long as their seeds are viable. The squash family are a great example of this. It doesn’t affect the immediate harvest, however if you grew several varieties of pumpkin in your garden and you saved the seeds there is no guarantee you will get the same type of pumpkin the following season. You may end up with something even better, but you may also end up with something not worth eating.
This is where things can get interesting for the seed saver. These seeds are the result of cross breeding to get a desired outcome like disease resistance. There is no guarantee that seeds from the fruit will be the same as the one you ate and enjoyed all summer long. It is like a controlled version of open pollination and you can easily do it yourself in your garden by tickling your two favourite plant flowers with a paintbrush and hope their offspring has the best of both. F1 is the first generation of a hybrid and an F2 is the second generation. This is why it isn’t recommended to save these seeds – you’ll never know what you’ll get!