I know of a few growers in B.C. and Alberta with similar lows to mine who are growing several Pedios successfully, and I *think *Sclerocactus parviflorus. I don't have any outside yet, but it sounds like Echinocereus (even though from populations in areas that get pretty cold) may have more trouble with my climate due to coolish summers more than winter lows, so I will be trying a raised bed designed and oriented to capture heat. I'll let you know in a few years how it works! Cohan Fulford West Central Alberta, Canada, Zone 2-3 record temps from 10-20 miles away: min -45C/-49F;max 34C/93F http://picasaweb.google.com/cactuscactus
On Wed, Feb 2, 2011 at 9:33 AM, penstemon <[email protected]> wrote: > > >Haven't tried any Scleros yet, but I think there is at least one species > that* might* be hardy here, so I will be trying.. I'll let you know if and > when I get anywhere with them! > > Well, it was -28C on the back patio here, last night. (Coldest winter here > in twenty years.) I figure that that's pretty good weather for sclerocactus > and pediocactus. > Most of them are probably hardy to temperatures colder than that, > especially if they grow in the high valleys of the western slope of the > Rockies and the intermountain region. > If it gets that cold, and the plants have prepared themselves beforehand by > losing most of the water in their cells (ie, shriveling almost to nothing), > and the only precipitation they get is snow (meaning, no precipitation, as > far as the plants are concerned), they should be fine. > > Bob Nold > Denver, Colorado, USA > > > --
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