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Cryptomeria with dried brown top and some brown within #791514

Asked May 18, 2022, 4:23 PM EDT

I am trying to determine the health (or progressive deterioration) of two cryptomeria that were planted in our yard in November 2021. They looked fine when planted. But by early winter brown-dry started to show and by March the tops were looking quite dry and browning (see pictures). By May the tops are all dry and totally brown (look dead), and the interior/bottoms also have areas of brown dead branches. The landscaper told as in March that it is not uncommon to have browning in Cryptomeria because of freezing temperatures and that it would likely shed the brown. They said to recontact in May if not improved. By May the trees look markedly worse. The landscaper now says the tops just need to be cut off and the tree will regrow and the trees look healthy. About the bottoms he says no concern and that it's all "winter burn" that can be cut off. He sent a picture of what a tree in trouble looks like, with 75% brown. It seems crazy to have to wait to such a point. I am afraid the trees are in trouble (they certainly look terrible in our yard and were expensive)! I also asked a reliable nursery (showed photos) and they said the trees look like they are in trouble, and that new trees should have been watered several times a week from planting to end of Dec and again in the spring. We got no such instructions and they were not watered except for natural rain. Please let our know what the situation could be with our Cryptomeria! Thank you,

Montgomery County Maryland

Expert Response

November is a bit late for planting and careful attention to aftercare, particularly watering, is important for the first 18-24 months of establishment of a tree. Early fall is ideal as weather is cool, moist and this gives time for roots to grow before the ground freezes for winter. 
As noted above water is important, particularly if we don't get at least an inch of rainfall per week (can monitor with a tuna fish can nearby). Here is our page on watering newly planted trees and shrubs: 
https://extension.umd.edu/resource/watering-trees-and-shrubs 

The lower, internal browning is somewhat typical and can be pruned out if you like. 
The dieback of the tops of the trees though is not typical and is likely a stress response.
Those tops are dead and can not green up again. Cutting off the tops of trees is usually to be avoided, but in this case it is o.k.. It will do much to make it look better, and these trees sometimes grow with more than one main leader anyway. 

Check out this page for more information on the plant, such as needing good sun and moist soil: https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=293811
Be sure that it isn't mulched too deeply (no more than 2-3 inches) and that the mulch is pulled back from contact from the trunk. If you have concerns about how it may have been planted, 
Hopefully with good care you will see new growth put on this season.

This page has more information to explore: 
https://extension.umd.edu/resource/problems-due-poor-care-after-planting


Christine

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