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sdnativenovice

Cassia Leptophylla Leaves All Turned Black

SDNativeNovice
9 years ago

I had four 24" boxed Cassia Leptophylla trees planted on my sloped back yard. They were healthy and even flowered. But now 8 months later the leaves are turning black. It got down to 33 degrees this week. Could it have been the cold? I recently gave it Best Super Iron Plant Food 9-9-9 and there have been lots of rain coming down this month.

Any help is appreciated.

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