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July 3, 2025 21 mins

Lou Meyer, regional business developer in Davey's mid-Atlantic region, talks about the Pennsylvania state tree, the Eastern hemlock, as well as its beauty, benefits and threats it faces from the hemlock woolly adelgid. 

In this episode we cover: 

  • History of the Eastern hemlock (1:03)
  • Horticultural oil for pest control (2:18) (5:56)
  • What are other treatment options for these trees? (4:04)
  • Signs of hemlock woolly adelgid (6:47)
  • Does fertilization help Eastern hemlocks? (8:07)
  • How weather and temperature affect these pests (8:31)
  • Can these pests kill hemlocks? (10:08)
  • Hemlock woolly adelgid damage treatment (10:48)
  • The wonder and beauty of Eastern hemlocks (11:41)
  • Are they easy to grow? (13:32) (14:06)
  • Shade-tolerant evergreen (13:40)
  • Physical description and genus of the tree (14:52)
  • These trees need room to grow (16:20)
  • Eastern hemlock cultivars (17:03)
  • Are all hemlock cultivars susceptible to hemlock woolly adelgid? (18:33)
  • Can deer damage these cultivars? (18:56)
  • Other uses for the Eastern hemlock (19:16)

To find your local Davey office, check out our find a local office page to search by zip code.

To read our Eastern hemlock blogs to know how to identify and care for the tree, visit Blog.Davey.com by clicking here - Tree Care Tips, News & Checklists.

Connect with Davey Tree on social media:
Twitter: @DaveyTree
Facebook: @DaveyTree
Instagram: @daveytree
YouTube: The Davey Tree Expert Company
LinkedIn: The Davey Tree Expert Company 

Connect with Doug Oster at www.dougoster.com

Have topics you'd like us to cover on the podcast? Email us at podcasts@davey.com. We want to hear from you!

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