Comments on: Plants of the Week – January 17 https://www.scottarboretum.org/pw-january-17/ Wed, 27 Aug 2025 21:45:51 +0000 hourly 1 https://wordpress.org/?v=6.8.5 By: Andrew Bunting https://www.scottarboretum.org/pw-january-17/#comment-817 Tue, 18 Jan 2011 20:42:54 +0000 http://blogs.scottarboretum.org/gardenseeds/?p=2684#comment-817 We have seen this also happen with some conifers such as the Japanese red-cedar, Cryptomeria japonica. It is often no so much a condition of the winter cold, but how these conifers harden off going into the winter. If we have a warm and/or wet fall then the likelihood of winter damage on some of the more tender conifers increases.

Andrew Bunting, Curator
Scott Arboretum

]]> By: jim https://www.scottarboretum.org/pw-january-17/#comment-816 Tue, 18 Jan 2011 20:17:08 +0000 http://blogs.scottarboretum.org/gardenseeds/?p=2684#comment-816 I am in zone 6 and we have problems with Cupressus arizonica and cultivars. I planted two in a garden at our local library. Each had reached, rather quickly I might add, a height of about 20′ when the winter of 2009/10 caused whole branches to die. Cutting out the branches in their considerable number would not have been practical nor aesthetic so the trees were removed. Other Cupressus in the area show the same stress from year to year. Leylands also suffer the same fate once they contract the die-back of branches–often planted as windbreaks or privacy screens–they often have to be taken down leaving holes in the planting scheme.

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