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Re: Rose Seed Stratification


Stratification is a term that describes "faking" the seeds into thinking
that they have rested through winter. This usually is done by mixing the
seeds in *slightly* moist peat. placing in a polyethylene bag, and
refrigerating at close to freezing temperatures. Most modern hybrid seed
doesn't require this treatment, but many of species roses from temperate
climates do. Usually 4-6 weeks time is sufficient. Many species will do
better with more of less time, higher or lower temperatures, etc. However,
if 50% germination rate is sufficient for your needs, then there is no need
to make a science project out of it. Since the seeds you mentioned have
already been refrigerated for an extended period of time, I wouldn't bother
with stratification. I would be mre concerned that the seed has dehydrated,
and would soak them for 24 hrs before planting.

-Dave-

-----Original Message-----
From: Asata <heaven_7@sirius.com>
To: rose-list@eskimo.com <rose-list@eskimo.com>
Date: Thursday, July 16, 1998 9:05 AM
Subject: Re:Rosa Canina


>
>Hello,
>
>All this talk about R. Canina, reminded me that earlier in the year I
>bought a package of R. Canina seeds from Richters Herbs, tossed them in
>the refrigerator and forgot all about them.   It never occurred to me that
>anyone could grow roses from seed and I bought them out of curiosity.
>
>Has anyone on the list ever done this?  The label said to "Keep
>refrigerated until open" and to stratify for 60-90 days at 40 degrees F.
>I've heard the term "stratify" before but I'm not too clear on how one
>does that.  Does it mean something more than refrigerating the seed?  Do
>you need to actually plant the seed in soil and then refrigerate it?  Any
>help would be greatly appreciated.  Thanks.
>
>Best wishes,
>
>Asata
>
>USDA Zone 9
>Sunset Zone 14
>
>
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