zea diploperennis

this stand of perennial teosinte sprang to life in 2011 and has wintered over the 2011-2012 and 2012-2013 winters...but they were reasonably mild compared to this past winter...i mulched them heavily with the usual compost and straw...but they are a sub-tropical grass and i am unsure of their tolerance...i left the compost pretty much in place and i left the newer stand covered...if and when this stand comes to life the other will be opened...if this one doesn't i will be waiting until after tha last average frost date...we'll see soon enough.