Naturalizing Alliums

Jane McGary
Wed, 10 Jun 2015 09:41:56 PDT
In my experience, Allium falcifolium, Allium siskiyouense, and Allium 
bolanderi are not aggressive seeders. Allium hyalinum increases rapidly 
by offsets and I would not recommend it if you want to keep it to a 
small space, but it did not seed much in my garden. Allium oreophilum, 
an Old World species, might be suitable. There was a pink-flowered 
species that I received from the Robinetts under what Mark McDonough 
felt was the wrong name, and it became quite a pest; I'm still not sure 
what it is, but I did not bring any from the old garden (which is now 
owned by people who like native West Coast plants and are not particular 
about confining them).

There are also some western American species that I classify as 
"middle-sized" (in flower, more than 10 cm and less than 30 cm tall). 
Allium peninsulare and the similar Allium crispum do not increase much. 
Allium douglasii is perhaps too aggressive here.

For Travis's area in southern Oregon I would stay initially with the 
western American species, of which there is a very large number. There 
are some notoriously weedy species among the Old World contingent. 
Search, and perhaps ask here, before turning them loose.

Jane McGary
Portland, Oregon, USA

On 6/10/2015 9:14 AM, Travis O wrote:
> Hello,
> I am looking for suggestions for non-weedy Alliums that can be naturalized in a wet cold winter/dry baking summer climate (Grants Pass, OR)? I would prefer short plants.
> And ideas?
> Travis Owen
> Rogue River, OR
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