New USDA Plant Hardiness Zone Map and Grasses

The new 2012 USDA Plant Hardiness Zone Map is good news for gardeners and anyone growing grasses. It is great to see more information and an interactive map. What does this mean for grasses? With the move to warmer zones across the US, more grasses can be grown in colder zones. In zone 4, and especially on the edges nearer zone 5, grasses that now may be hardy are listed below.
Oriental fountain grass, Pennisetum orientale ‘Karley Rose’,  an attractive rosy pink flowers might live now in southern Minnesota. see photo below.
Chasmanthium latifolium
and the new cultivar ‘River Mist’ should show less winter injury and winterkill.

 

 

Miscanthus sinensis ‘Morning Light’, a stiff grey, finely variegated grass may survive in mild years in zone 4 as well. And some of the variegated sedges, seen below, coming native to Japan, could live in our milder winters.

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About grasstalk

University of Minnesota Professor and Extension Horticulturist
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