That cant be cold damage can it? IF anything thats wind burn? The burgundy is the natural winter response of Mahonia aquifolium to winter sun...not w...

In my experience, M. aquifolium subjected to full winter sun here will have near 100% browning of leaves by spring. Move the same plant to an eastern...

These four are hardy in Kingston.....Mahonia bealei, Aralia spinosa & elata, and Kalopanax pictus.The Mahonia will do best if you keep the winter ...