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Tips:5¢ Advice:Free
Join Date: Aug-2001
Location: Silicon Valley
Country: USA
Posts: 9,742
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Re: sick Zalkova/Zalkoma
Zelkova serrata (Japanese Grey Bark Elm) is a hardy, deciduous tree that is best kept outdoors year round in temperate climates.
Zelkova leaves will turn and fall in late autumn sometime around the first frost. *This is in response to the shortening days and the onset of cold weather. *By keeping the tree indoors, you extend can extend the growing season somewhat, but the leaves were not designed to last indefinitely.
It would be best to put the tree outside and allow it to go dormant. * *You can defoliate it manually by plucking away all of the leaves, or you can allow it to do what it will.
Deciduous trees are outdoor plants; they can be enjoyed indoors for a few days at a time, but they need the sunshine and progress of the seasons to thrive. *Some growers succeed in maintaining them indoors with variable success. *It really depends on the climate, growing conditions and individual species.
Regards,
Matt
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