Yucca
Yucca thomsoniana
Planted on rockgarden since spring 2011, well drained. winter rain protection
Origin: import Mexico
Frost hardiness limit: - 23
Winter 2011/2012 : min.-17C (this winter was one of the strongest in the last years, with several strong freezing periods with minimums under -16). Plant is doing...
Yucca filamentosa
Planted in rockgarden since 2008, without winter rain protection
Origin: unknown (rootstock from awesome garden)
Frost hardiness limit: -30C
Winter 2011/2012 : min.-17C
Winter 2012/2013: min.-12C
Winter 2013/2014: min.-11C
Yucca gloriosa
Planted on rockgarden since spring 2011, well drained, partly rain protection.
Origin: unknown (rootstock from awesome garden)
Frost hardiness limit: - 25C
Winter 2011/2012 : min.-17C without problems
Winter 2012/2013: min.-12C