My snapdragons that you've probably seen in some of my photos unfortunately not started from seed however they are in their third year in the same pot. I do think though that some of the pods burst and drop seeds into the pot before I have a chance to collect them and have started themselves. I have quite a few seeds I've collected over the years. I'll go out to the greenhouse today and as an experiment try to start some. It should stay warm enough in there with the heater. Another reason mine have been alive so long is that I keep them out of the hot Texas sun. During the summer when all my plants are outside the greenhouses I have a shady area on the west side of one of the greenhouses. I place them there where one of my trees gives them some shade but they still get indirect sunlight. Here's a link I found that gives some good information on starting from seed -
http://www.wikihow.com/Grow-Sn... I'll update my blog here as things progress.
Dummy me, I posted a link to this thread not the 'How to grow Snapdragons'. It's been corrected.