Lycoris Cold Hardiness

Barna Sipos sipos.barna@gmail.com
Sat, 01 Dec 2012 04:01:46 PST
Thanks Tony,
I knew that they are hardier in a hot summer climate, but I did not know that it can be this much difference. It is 20F.
The summers are at about 100F for long weeks (in Hungary), it is really hot and dry for about 3-4 months. I can try the less hardy species in this case.

Thanks again.
Regards,
Barna


On 1 Dec 2012, at 00:10, Tony Avent <Tony@plantdelights.com> wrote:

> Barna:
> 
> Winter hardiness of plants can vary by as much as 20 degrees F, based on the amount of summer heat they receive or don't receive.  In other words, if a warm climate plant would survive -10 degrees F in a hot summer climate, it will likely not survive lower than +10 degree F in a cool summer climate...hence the reason for the discrepancies in hardiness ratings.
> 
> Tony Avent
> Plant Delights Nursery @
> Juniper Level Botanic Garden
> 9241 Sauls Road
> Raleigh, North Carolina  27603  USA
> Minimum Winter Temps 0-5 F
> Maximum Summer Temps 95-105F
> USDA Hardiness Zone 7b
> email tony@plantdelights.com
> website  http://www.plantdelights.com/
> phone 919 772-4794
> fax  919 772-4752
> "I consider every plant hardy until I have killed it myself...at least three times" - Avent
> 
> -----Original Message-----
> From: pbs-bounces@lists.ibiblio.org [mailto:pbs-bounces@lists.ibiblio.org] On Behalf Of Barna Sipos
> Sent: Friday, November 30, 2012 5:11 PM
> To: Pacific Bulb Society
> Subject: [pbs] Lycoris Cold Hardiness
> 
> Hi All,
> 
> I tried to find some more exact information about the cold hardiness
> of some Lycoris species, but every webpage says something different.
> (somewhere the L sprengeri hardy to USDA zone 6 but the other page is warning:
> "do need to be brought indoors for the winter" in the UK.)
> Has anybody got information about these plants? Which one is reliably frost hardy at which USDA zone?
> I would be interested mainly the species listed below.
> 
> L albiflora
> L aurea
> L caldwellii
> L chinensis
> L haywardii
> L houdysellii
> L longituba
> L radiata
> L rosaea
> L sanguinea
> L sprengeri
> L traubii
> 
> Many Thanks,
> 
> Barna Sipos
> Hungary, UK
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