Trees and Shrubs

See All Trees and Shrubs

View as List Grid

Items 1-25 of 524

Sort by:
Date Posted Set Ascending Direction
  1. Leaf damage by native holly leaf miners. Photograph by Will Kuhn via iNaturalist, used under a CC BY 4.0 license.
    Articles
    Native Holly Leafminer
    Ornamental plantings of holly in Pennsylvania are often damaged by leafmining pests. The native holly leafminer only feeds on the foliage of American holly.
  2. Araneus saevus male. Photo by Steven Jacobs, Penn State Extension
    Articles
    Fierce Orbweaver
    By Steve Jacobs
    Araneus saevus is found from Canada into the northern United States. It can be seen in forested areas and suburbia with mature landscape plantings.
  3. Photo by David Almquist on Bugguide.org, used with permission.
    Articles
    Camphor Shoot Borer (Cnestus mutilatus)
    By Michael J. Skvarla
    Camphor shoot borers are an introduced species of ambrosia beetle that attack small-diameter branches and trunks of stressed, weakened, and dying trees. They also accidentally bore holes into plastic gasoline containers, hoses, and tanks.
  4. Green Industry Conference
    Conferences

    $95.00

    Green Industry Conference
    When 01/04/2023
    Length 10 hours
    Green industry professionals are invited to join us for professional development and networking opportunities.
  5. Greenhouse Growers Day
    Workshops

    $60.00

    Greenhouse Growers Day
    When 01/26/2023
    Length 7 hours
    Join Penn State Extension, Penn State Research, and the State Floriculture Advisory Board for another great meeting and pesticide credits.
  6. Pesticide Applicator Short Course (Core | Cats. 06, 07, 23)
    Workshops

    $150.00

    Pesticide Applicator Short Course (Core | Cats. 06, 07, 23)
    When 03/13/2023
    Length 8 hrs. or more
    Build a foundation of knowledge about safe and proper handling and use of pesticides, and prepare for the certified pesticide applicator's exam for Core and Cats. 06, 07, and 23.
  7. Landscaping Safety: Pesticides
    Online Courses

    $19.00

    Landscaping Safety: Pesticides
    Sections 6
    Length 4 hours
    Learn about pesticide labels, regulations, and application. Follow procedures for storage, spills, emergencies, and safety precautions. Earn PCH credits.
  8. Pesticide Applicator Short Course (Core | Cats. 06, 07, 10, 23)
    Workshops

    $150.00

    Pesticide Applicator Short Course (Core | Cats. 06, 07, 10, 23)
    When Multiple Options Available
    Length 6 optional days, 6 hours each day
    These courses prepare professionals in a classroom-style setting to take the certified pesticide applicator's exam for Core and Categories 06, 07, 10, and 23.
  9. Tree of Heaven: Accurate Identification
    Videos
    Tree of Heaven: Accurate Identification
    By David R. Jackson
    Length 3:47
    Learn the distinguishing characteristics of the invasive tree-of-heaven that you can use to accurately identify it.
  10. Landscaping Safety: Emergency Preparedness and First Aid Basics
    Online Courses

    $19.00

    Landscaping Safety: Emergency Preparedness and First Aid Basics
    Sections 3
    Length 1 hour
    Learn how to plan and prepare for signs of and basic responses to common medical emergencies on landscape job sites.
  11. Design Basics for Residential Landscapes
    Online Courses

    $59.00

    Design Basics for Residential Landscapes
    Sections 8
    Length 6 hours
    Learn about landscape design, elements, planning, site assessment, cost estimates, regulatory requirements, sustainable practices, and plan execution. Earn PCH credits.
  12. Turf and Ornamentals: Right-of-Way
    Webinars

    $20.00

    Turf and Ornamentals: Right-of-Way
    When 02/21/2023
    Length 2 hours
    Earn Cat. 10 and PC credits while you learn about common invasive plants in PA, what's new in Integrated Vegetation Management, and more
  13. Turf and Ornamentals: Turf
    Webinars

    $20.00

    Turf and Ornamentals: Turf
    When 02/14/2023
    Length 2 hours
    Earn Cat. 7, 18, 23, and PC credits while you learn about turf herbicides, preventing diseases, and more!
  14. Turf and Ornamentals: Aquatics
    Webinars

    $20.00

    Turf and Ornamentals: Aquatics
    When 02/07/2023
    Length 2 hours
    Earn Cat. 9 and PC credits while you learn about aquatic environments, aquatic herbicides, and more.
  15. Turf and Ornamentals: Pools
    Webinars

    $20.00

    Turf and Ornamentals: Pools
    When 01/31/2023
    Length 2 hours
    Earn Cat. 24 and PC credits while you learn about pool chemical problems and stabilizing pH levels, and more.
  16. Turf and Ornamentals: Ornamentals
    Webinars

    $20.00

    Turf and Ornamentals: Ornamentals
    When 01/24/2023
    Length 2 hours
    Earn Cat. PC, 06, 18, and 23 credits while you learn about pest and disease control, causes of environmental stressors, and more.
  17. Small black specks resembling beard stubble located on the undersides of oak leaves are eggs laid by the oak lace bug. Photo: Thomas Ford, Penn State
    News
    Lace Bugs on Oak
    Date Posted 10/7/2022
    A landscaper brought oak leaves into the office recently after being concerned about premature leaf drop and bronzing of the oak leaves in a Blair County landscape.
  18. Affected beech trees exhibit thin leaf canopies as leaves curl and die. Photo: Emelie Swackhamer, Penn State
    News
    Beech Leaf Disease in Pennsylvania
    Date Posted 10/7/2022
    American Beech is a beautiful and important tree in our forests. It provides beech nuts for wildlife, and the wood can be used for lumber, flooring, furniture, and other objects.
Page
You're currently reading page 1