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		Orchid Board - Most Complete Orchid Forum on the web ! > ORCHID DISCUSSIONS > Pests & Diseases
Dendrobium nobile - black powder at stem joints

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08-01-2020, 09:55 PM

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Join Date: Jun 2015

Zone: 9b

Member of:Desert Valley Orchid Society, AOS

Location: Phoenix AZ - Lower Sonoran Desert

Posts: 18,986

I can't see the photo very well. The cane is very shriveled. They should not dry out this much. You may not be watering enough. Den nobiles need huge amounts of water during the growing season, and they should never dry out during this time. If underwatered leaves may die by turning black at the bases.

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