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Trees And The Different Seasons - Ostvig Tree Care
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Trees And The Different Seasons


Trees And The Different Seasons




Knowing what to look for and plan for in the different seasons is key to keeping your trees healthy. Below are a few tips for each season to help you plan the care of your yard or property.


  • Is your tree behind when it breaks bud? Is your tree only half leafed out? These are both red flags in terms of your tree’s health.
  • This is the best time to treat for leaf diseases including: apple scab, powdery mildew, rusts, needle diseases of pine and spruce, and anthracnose.
  • Insects to look for include: plant bugs, leaf hoppers, tent caterpillars, pine sawfly.
  • This is one of the best times to plant trees and shrubs (along with fall) so prepare for new additions to your landscape now.
  • Now is an ideal time to treat your Ash trees for Emerald Ash Borer.


  • Japanese beetles come out, so keep an eye peeled for these bad boys.
  • If you see early defoliation on any of your trees, that’s a sign of stress and ill health.
  • Insects to look for include: spruce sawfly, tent caterpillars, spider mites, aphids.
  • Now is a good time to treat your Elm trees to prevent Dutch Elm Disease.
  • Remember to enjoy the shade and reduced cooling costs that you get from your trees!


  • Watch to see if your trees are turning fall colors at about the same time. If one is turning too quickly or delayed, it may be a sign of poor health.
  • This is the other best time to plant trees and shrubs, so if there were additions you didn’t get to in the spring, you can still put them in now.
  • Now is a good time to fertilize your trees.
  • Consider pre-treating your trees for insects that emerge in the early sprint.
  • If you haven’t treated your Ash trees for Emerald Ash Borer, now would be a good time to do that.
  • Have your trees pruned in advance of winter storms that could knock limbs onto your house or car.


  • Winter is the best time to prune trees and shrubs because they’re dormant and not exposed to additional disease and insect issues.
  • Pruning trees in early winter can help you avoid storm damage to trees and property when there’s a heavy snowfall.
  • Remember to enjoy the savings you get on your heating bill when your trees act as a windbreak.


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