Not always. Some do the "float" or "sink" test and prefer planting the sinkers, feeling they have larger, heavier embryos inside. Sometimes they float due to trapped air bubbles. Sometimes they float because they are empty. If you have too many seeds to comfortably handle, it may be a convenient way to reduce the load. I don't do the sink test. If I have way too many of a particular cross, I may only plant the larger, plumper ones. If it's from a particularly intriguing or difficult cross, I'll likely plant every one of them. It's up to you and how you want to handle them. Try it, you may be surprised..or not. It's all part of the discovery. Good luck and have fun! Kim

I love a good experiment so I've tried this one myself. I found that some of the floaters did germinate and some of the sinkers didn't so I'd say plant them all for the best chance of success.