Helichrysum hardiness was Re: plants for dry shade

Kurt wrote:

>Both the lime green and gray forms of this plant are very attractive.  I've 
>only ever seen it used in container plantings, however.  It's difficult to 
>find in nurseries here in the Central Valley, and I don't think it's very 
>cold-hardy.  I'd love to give it a try, otherwise.  Does anybody know 
>anything about the cold hardiness of this species?

Given good drainage, the straight species is damaged only slightly at
minus 5C and seems capable of withstanding minus 7C for short periods.
The variegated form is nearly as hardy remaining undamaged at minus 3C
and easily surviving the minor damage at minus 5C.  Helichrysum
'Limelight' is undamaged at minus 3C, suffers quite severe damage at
minus 5C and may not survive.  

Dave Poole
TORQUAY  UK  Zone 9b
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