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Wendy from Near Scranton Pa writes

My blue spruce have Rhizosphaera kalkhoffii what should I use?

Answer:

To treat for Rhizosphaera Needle Cast you could use Docket DF. You will need to use 5 lbs of Docket DF per 100 gallons of water (1.25 lbs of Docket DF per 25 gallons of water) for Rhizosphaera Needlecast on spruce trees.

Answer last updated on: 10/24/2013

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