It looks like we have a clear winner on hardiness........ Y. linearifolia is 'mint' while Y. carnerosana 'Mexican form' is dead? Low temp was -6.5F (-21.4C) with many, many, many other cold days/nights. Both moisture protected in the 'tubes'.
Y. carnerosana 'Mexican form'
Y. linearifolia vs. carnerosana 'mexican form' - Tim MA z6 February 22, 2014, 11:07 am
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