Thanks for sharing your experiment results!
I typically just plant the seeds in potting medium in cups in my south window. But with so many older seeds, decided to try the H2O2 beforehand to see how many of the older seeds germinate.
I always hold back a few seeds when sowing them just in case, so those (now older seeds) are the left overs from that. I had no idea that daylily seeds didn't last that long which is why I chose to always hold some back. I need to start using those after germinating their siblings so the seeds don't go to waste.
This was an informative thread. Thanks for all the information.
