Manfreda -- hardiness issues.

aaron floden
Fri, 12 Jun 2009 05:39:57 PDT
 While in Kansas, just south of Kansas City, I wintered Manfreda maculosa for two years outside unprotected, but fairly dry. During these two winters it took temperatures into the  negative single digits. The two survivors of the brood from Alplains seed (?) came with me to TN where they are completely content in the garden even trying to remain evergreen down to 7F this past winter.

 Manfreda virginica, from all the locations I have collected it, have proven hardy in Z5 Kansas, handling temperatures  to -10F. All mine are sending up spikes now.
 Aaron Floden
 Knoxville, TN

 On Wed, 6/10/09, Tony Avent <> wrote:

The only manfreda that I know of which is hardy north of Zone 7b is M. 
virginica, which has a wide range.  I was in southern Minnesota last 
week and saw one that has grown well there for many years.  Of the 
xMangave's,  xM. 'Bloodspot' is the least hardy since A. macroacantha 
was a parent.  Next is xM. 'Macha Mocha', which is a Zone 8 plant, using 
A. celsii.  Our unreleased hybrids used A. salmiana v. ferox x Manfreda 
jalisciana, both solid Zone 7b plants.  I would rate both Polianthes 
tuberosa and P. gemniflora also as Zone 7b plants, so we don't have any 
hybrids yet that will survive north of the Mason-Dixon line.  Jon is 
slighter colder than we are, so he may have found some of his hybrids 
that can take Zone 7a temperatures.  Adding A. polianthifolia to the mix 
is brilliant since it got no damage here this year at 9F.  That being 
said, the work continues.


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