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Cornell Cooperative Extension

Suffolk County

  • Agriculture
  • Community Education
  • Gardening
  • Horticulture Labs
  • Marine
  • Energy
  • County Farm
  • 4-H
  • Peconic Dunes
  • Recursos en Español
roses
Image by Sandy Repp

Pretty pale pink roses.

Hydrangea

Take care in pruning your hydrangeas for maximum flowering.

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  • Tree and Shrub Maintenance
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Tree and Shrub Maintenance


Common Woody Ornamentals and Their Insect and Disease Problems

Cornell Guide to Planting and Maintaining Trees and Shrubs

Creating the Urban Forest: The Bare Root Method (Planting trees bare root)

Culture of Garden Roses

Cultural Tree Problems

Homeowners Guide for Beautiful, Safe and Healthy Trees

How to Correctly Prune a Tree

How to Plant Trees and Shrubs


Planting and After-care of Container Grown Plants

Pruning Hydrangea

Illustrated Guide to Pruning Trees and Shrubs

Protect our Trees from Pests-Don't Move Firewood

Contact

Alice Raimondo
Horticulture Consultant
aw242@cornell.edu
631-727-4126

Last updated March 9, 2023

Horticulture Factsheets

  • General Gardening Information
  • Sustainable Gardening
  • Vegetable Gardening
  • Vegetable Diseases
  • Vegetable Insects
  • Lawn Care
  • Lawn Pest Control
  • Tree / Shrub / Groundcover / Vine
  • Tree and Shrub Maintenance
  • Tree and Shrub Insect Pests
  • Tree and Shrub Disease
  • Flowers, Bulbs, and Ornamental Grasses
  • Small Fruit
  • Small Fruit Pests
  • Tree Fruit Growing
  • Tree Fruit Insect Pests
  • Tree Fruit Diseases
  • Indoor / Outdoor Insect Pests
  • Tick Biology and Control
  • Wildlife
  • Indoor Plant Care
  • Christmas Trees
  • Integrated Pest Management
  • Poisonous Plants
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Cornell Cooperative Extension
Suffolk County

Extension Education Center
423 Griffing Avenue, Suite 100
Riverhead, New York 11901-3071
TEL: 631-727-7850
suffolk@cornell.edu
Hours: 8:30am-4:30pm

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