Propagation: Show Us Your Babies..., 1 by

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You are partially correct. They are wintersown with the "Deno method". All that means is that some were stratified in the refrigerator. Seeds don't care where the cold comes from---outside or fridge. Few varieties require the flunctuating temp outside. That is what my coldframe is for. Having said that, I can get the same result from the fridge by returning the ziplock baggie to the fridge and/or freezer after warmth. I did that with Clematis and Penstemon. I have one Clematis sprout and several Penstemon sprouting with more coming.

I don't have to wait until warmer weather to germinate the seeds. My 26 varieties of Deno sown seeds have already sprouted and are happily growing under grow lights on 2, 4 ft long shelves.

Here is what the Deno method does. These are hardy Geranium 'Vision' seeds just prior to potting. They were stratified in the fridge for 1 week. Started on 2/17 and sprouted 3/11. Those without roots have swelled and ready to sprout, and did.