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  • Diseases
    • Annosus Root Rot
    • Phytopthora Root Rot
    • Grovesiella Canker
    • Interior Needle Blight
    • Rhabdocline Needle Cast
    • Swiss Needle Cast
    • Melampsora Needle Rust
    • Pucciniastrum Needle Rust
    • Uredinopsis Needle Rust
  • Insects
    • Twig Aphid
    • Conifer Root Aphid
    • Conifer Aphids
    • Balsam Wooly Adelgid
    • Cooley Spruce Gall Adelgid
    • Douglas-fir Needle Midge
    • Spruce Spider Mite
    • Eriophyid Mites
    • Root Weevil
    • Douglas-fir Twig Weevil
  • Disorders
    • Interior Needle Loss
    • Yellow-green Mottle Syndrome
    • Current Season Needle Necrosis (CSNN)
  • Damage
    • Weather Damage
    • Frost Damage
    • Winter Injury
    • Drought
    • Heat Damage
    • Chemical Damage
    • 2, 4-D and Triclopyr
    • Fertilizer Burn
    • Glyphosate (Roundup)
    • Triazines
    • Vertebrate Damage
    • Deer, Elk, Mice & Voles
    • Rabbits & Birds
    • Mechanical Damage
    • Mechanical Damage
  • About
    • Authors & Acknowledgments
    • Copyright and Disclaimer
  • Order
    • Order Publication
  • English
  • Español

Disorders

Interior Needle Loss

Learn more about Interior Needle Loss
Más información sobre Interior Needle Loss

Yellow-green Mottle Syndrome

Learn more about Yellow-green Mottle Syndrome
Más información sobre Yellow-green Mottle Syndrome

Current Season Needle Necrosis (CSNN)

Learn more about Current Season Needle Necrosis (CSNN)
Más información sobre Current Season Needle Necrosis (CSNN)

Identifying and Managing Christmas Tree Diseases, Pests, and Other Problems
This field guide is for Christmas tree growers, field workers, and anyone interested in the production of Christmas trees.

Contact Info

Extension Communications
422 Kerr Administration Building
Corvallis, OR 97331

541-737-3311

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  • Diseases
    • Annosus Root Rot
    • Phytopthora Root Rot
    • Grovesiella Canker
    • Interior Needle Blight
    • Rhabdocline Needle Cast
    • Swiss Needle Cast
    • Melampsora Needle Rust
    • Pucciniastrum Needle Rust
    • Uredinopsis Needle Rust
  • Insects
    • Twig Aphid
    • Conifer Root Aphid
    • Conifer Aphids
    • Balsam Wooly Adelgid
    • Cooley Spruce Gall Adelgid
    • Douglas-fir Needle Midge
    • Spruce Spider Mite
    • Eriophyid Mites
    • Root Weevil
    • Douglas-fir Twig Weevil
  • Disorders
    • Interior Needle Loss
    • Yellow-green Mottle Syndrome
    • Current Season Needle Necrosis (CSNN)
  • Damage
    • Weather Damage
    • Frost Damage
    • Winter Injury
    • Drought
    • Heat Damage
    • Chemical Damage
    • 2, 4-D and Triclopyr
    • Fertilizer Burn
    • Glyphosate (Roundup)
    • Triazines
    • Vertebrate Damage
    • Deer, Elk, Mice & Voles
    • Rabbits & Birds
    • Mechanical Damage
    • Mechanical Damage
  • About
    • Authors & Acknowledgments
    • Copyright and Disclaimer
  • Order
    • Order Publication
Identifying and Managing Christmas Tree Diseases, Pests, and Other Problems

Identifying and Managing Christmas Tree Diseases, Pests, and Other Problems

This field guide is for Christmas tree growers, field workers, and anyone interested in the production of Christmas trees.
  • OSU Extension Publications
    • OSU Extension Catalog
    • Best Management Practices for Christmas Tree Export
    • Buenas Prácticas de Manejo para la Exportación de Árboles de Navidad
    • Identifying and Managing Christmas Tree Diseases, Pests, and Other Problems
    • Identificación y Manejo de Enfermedades, Plagas y Otros Problemas en Árboles de Navidad
  • Identifying and Managing Christmas Tree Diseases, Pests, and Other Problems
    • Diseases
      • Annosus Root Rot
      • Phytopthora Root Rot
      • Grovesiella Canker
      • Interior Needle Blight
      • Rhabdocline Needle Cast
      • Swiss Needle Cast
      • Melampsora Needle Rust
      • Pucciniastrum Needle Rust
      • Uredinopsis Needle Rust
    • Insects
      • Twig Aphid
      • Conifer Root Aphid
      • Conifer Aphids
      • Balsam Wooly Adelgid
      • Cooley Spruce Gall Adelgid
      • Douglas-fir Needle Midge
      • Spruce Spider Mite
      • Eriophyid Mites
      • Root Weevil
      • Douglas-fir Twig Weevil
    • Disorders
      • Interior Needle Loss
      • Yellow-green Mottle Syndrome
      • Current Season Needle Necrosis (CSNN)
    • Damage
      • Weather Damage
      • Frost Damage
      • Winter Injury
      • Drought
      • Heat Damage
      • Chemical Damage
      • 2, 4-D and Triclopyr
      • Fertilizer Burn
      • Glyphosate (Roundup)
      • Triazines
      • Vertebrate Damage
      • Deer, Elk, Mice & Voles
      • Rabbits & Birds
      • Mechanical Damage
      • Mechanical Damage
    • About
      • Authors & Acknowledgments
      • Copyright and Disclaimer
    • Order
      • Order Publication