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Apr 16, 2015 4:53 AM CST
Name: Sue
Ontario, Canada (Zone 4b)
Annuals Native Plants and Wildflowers Keeps Horses Dog Lover Daylilies Region: Canadian
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Natalie said:

I'm still finding this very confusing! You say that the seeds respond to stratification, such as winter in the fridge or outdoors, and then a spring (room temp or warmer temps outdoors). That would suggest that the seeds must be warm in order to germinate, and that just isn't always the case. I'm far from the only person who germinates the seeds in the fridge. I've never germinated them in outside the fridge, and yet, I always have success. I just don't want anyone to think that it is impossible to germinate them in the fridge, because it isn't!


This is a quote by Tink from a previous thread on ATP : " I tried the germination in the baggies in the fridge one time and none germinated. But from the article in the Daylily Journal fall 2010, the goal is not to have them germinate in the fridge. You want the cold temps in the fridge to break dormancy and then they will germinate faster once they are at room temp." This is the thread:
The thread "Damp Stratification in Vermiculite ?" in Daylilies forum

(I should 'fess up that I wrote the article being quoted from the AHS Daylily Journal - also add that it did not take the seeds a month to germinate at room temperature after coming out of the fridge as suggested, that's a misunderstanding of the article - they were all well up and running by a month as the pictures show. If anyone would like a PDF of the article please T-mail me).

Sooo, germinating in the fridge didn't work for Tink and none of my seeds germinated during six weeks stratifying in the fridge, however mine all germinated quickly after being removed from the fridge.

You are right that stratified daylily seeds can germinate at temperatures of 10C (50F) or even lower but that doesn't mean it's the optimum. I've also heard of other people having some seeds germinate in the fridge during stratification (either they were not dormant to start with or only needed a very short stratification time) although that was unintentional. In Dr. Griesbach's research, they didn't germinate below 16C (61F) if not stratified. That latter may be fixed during the time in the fridge assuming they are dampened, but still it didn't happen with mine and others, and may be a difference between our fridge temperatures, time in the fridge, or something in the nature of the seeds.

The method I'm describing (damp chilling in fridge and then room temperature) is the standard way of starting seeds (not just daylilies) that need to "think" they've been through a winter. Germinating daylily seeds in a fridge is not typical but I know it suits you. However, I wouldn't recommend it for someone just starting out. My suggestion to a person new to starting daylily seeds is to start with the normal basic stratification method first (or just plant them and wait to see what happens). If they want to experiment after that then go for it but at the moment I think we're more sowing the seeds of confusion Smiling
Last edited by sooby Apr 16, 2015 5:53 AM Icon for preview

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