Here we are a month later and ready for a little update:
1. Yes, the wool sweater seemed to help hold another 1/2 degree C or so. We were still hovering around 20 to 22C which is below the minimum 24C target temperature, but fingers are crossed.
2. Downside is that the seeds are pretty much in the dark. Remembering to check them, and actually being able to see the little critters when they do pop is an issue.
3. With the lower temperature comes slower germination - thus more patience and more checking.
4. But patience wins. Four days ago I spotted baby #1. The stem didn't look ridiculously long compared to the example in a video I watched, but I quickly got it into a pot and on my front window ledge where plant lights give some extra light morning and evening.
5. Today, there were two more babies. The cotyledons really do look sufficiently like the ones in the video that my confidence has risen. It's not like I need 20 of them - 3 is plenty redundancy in case I loose any. They are self fertile according to the web.
6. I have put the tray back in. More babies are always welcome. I know people locally who like having "house plants" although it seems this will be on the large size as houseplants go. I noticed that all three that have germinated have been right at the back of the tray, closer to the center of the water heater and with lots of insulation from objects behind the little area I cleared. I need to take my chick candling/hatching flashlight down there to make spotting babies a bit easier. We will see what happens....
Unfortunately the video wouldn't let me post it here. I don't know if the URL alone will allow any of you to watch it:
https://www.youtube.com/watch?v=mlJpyKEpTek
There doesn't seem to be a lot of info on the web about starting from seed instead of cuttings.
I will update again as things progress.