Date: Mon, 12 May 97 20:02 EDT From: dave evans <T442119@RUTADMIN.RUTGERS.EDU> To: cp@opus.hpl.hp.com Message-Id: <aabcdefg1886$foo@default> Subject: Re: Re: Sar Seeds
> From: Oliver T Massey CFS <massey@HAL.FMHI.USF.EDU>
>
> > > About two weeks in the fridge
> > > could be enough for the most southern plants.
> > > Dave Evans
>
> > Sorry everyone, I know I have posted something along these lines before,
> > but I like to stratify my Sarra seed for as long as possible. I have
> > had seed cold damp stratifying in spaghnum moss in my crisper for
> > 12 months, and these showed the best % germination I have seen!
I agree. I was just thinking that since they have already missed part
of the season, that a shorter stratification may be just as good. :)
> I tend to stratify for about six weeks, but just to confirm the fact that
> nothing is certain in CPs, I always get some seedlings coming up in my outdoor
> plants from seed that was dropped before I could collect it. I have no idea
> the percent germination, but this last winter we did not have any nights below
> freezing. We did have at least one week where most nights got into the 40's but
> the day temps climbed back into the mid to high 60's. So, I wonder if other
> stratification approaches might work also? Maybe a week in the frig, or two
> days in the freezer?
Hi Tom,
I'm under the impression that seed stratifies when it is wet
(has imbibed water) and the temperture is below 40~F. Now, as you
all know, days are hotter and nights cooler/colder. If a seed is
warmed above 40~F. during the day while only at night does the temp
drop enough for stratification to continue, it will take it about
twice as long to stratify as it would in the fridge where the temps
should always be a couple degrees below 40~F.
Also, I doubt freezing will stratify them faster, but perhaps
if they are kept right at freezing/melting with couple ice cubes
in the fridge, they might stratify a little faster...
Dave Evans
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