Re: [gardeners] Oregon Grape Propagation

Lon J. Rombough (
Wed, 25 Jul 2001 08:47:17 -0700

Perhaps they germinate differently in your area, but here, the seed doesn't
germinate until spring.  Though some species of plants have adapted to the
conditions you describe by requiring warm "stratification", followed by a
cold one, before they germinate.  Elderberries are one such plant.
-Lon Rombough
Grapes, writing, consulting, more, plus word on my grape book at

>From: Margaret Lauterbach <>
>Subject: Re: [gardeners] Oregon Grape Propagation
>Date: Wed, Jul 25, 2001, 7:43 AM

>But Lon that's the opposite of what's happening in nature. Berries/seeds 
>are maturing now. If they fall to earth (even through the medium of a 
>bird's gut), they've got at least two months of warm weather before the 
>cold. And this is a plant that is native and wild. Margaret L
>At 10:17 PM 7/24/01 -0700, you wrote:
>>You have the standard tall Oregon Grape (Mahonia aquifolium).  The seed has
>>to be stratified - go through cold, moist conditions, before it will
>>germinate.  Put some in a plastic bag with a couple of tablespoons of moist
>>peat, put it in the refrigerator (do NOT freeze it) and leave it for three
>>months.  At the end of that time you should be able to plant it and have it
>>germinate (in a suitably warm place - the seedlings won't come up if it
>>isn't warm), of course).
>>-Lon Rombough