Canna from seed - percent success rate?
About 1 1/2 weeks ago, I prepped and planted canna lily seeds in two flats with 144 cells total. 2 - 3 seeds per cell (somewhere between 288 and 432 seeds) - indoors.
As of today, I've only gotten 59 healthy plants (about 2 - 3" tall) total. Today, I dug through the cells that didn't produce.
1. Some were rooting but 'stuck', in that they were still too hard to produce more than the root.
2. Some were still rock hard and needed to be scored again.
3. Some were rotten or moldy (those were thrown out).
I'd baked the soil prior to using; soaked the seeds in peroxide, and mixed pure cinnamon into the soil.
Is this still a decent outcome? Is there anything I can do to ensure the ones that have made it will continue to thrive?
About 8 years ago, I started a canna garden with only 6 seeds. I don't know why I'm disappointed in this outcome... 59 is better than 6/6.
Thank you for any responses!