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Pruning Trees and Shrubs

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Pruning Trees and Shrubs. Rick Abrahamson University of Minnesota Extension Clay County. When should trees and shrubs be pruned?. January - February. Oak Oak Wilt Elm Dutch Elm Disease. March. Oak Ash Ash borer Birch Bronze Birch borer. Fireblight control Apple/crabapple

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Pruning Trees and Shrubs

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  1. Pruning Trees and Shrubs Rick Abrahamson University of Minnesota Extension Clay County

  2. When should trees and shrubsbe pruned?

  3. January - February • Oak • Oak Wilt • Elm • Dutch Elm Disease

  4. March • Oak • Ash • Ash borer • Birch • Bronze Birch borer

  5. Fireblight control Apple/crabapple Mountain-ash Cotoneaster Shade and ornamental trees Hackberry Linden Poplar Early April (1st – 15th) • Stem canker control • Honey-locust

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