Here are some horticultural websites that you may find helpful.

All-America Selections-Annual Flower and Vegetable Variety Winners
All American Selections

All-America Rose Selections
All-America Rose Selections

Asian Longhorned Beetle Information
Asian Longhorn Beetle

A gardening book packed with plants that will grow and thrive in the Empire State, including Long Island and the Metropolitan area. It includes the best annuals, perennials, trees and shrubs, roses, vines, bulbs, herbs and outdoor foliage plants. This new gardening book identifies the hardiness zone for each plant, their height and spread, flower color, bloom time and planting information. It also includes growing conditions, tips, recommended varieties and other practical and interesting information about these readily available and attractive plants - all with full color photographs (360 photos) It is 160 plus pages of colorful plants that will grow in New York and Long Island and Metropolitan area. Included are: Gold Medal Award winning trees, shrubs and perennials, All-America Selections annuals, All-America Rose Selections and selected Perennials of the Year. Over 360 plants.
Best Garden Plants for New York State

Cornell Cooperative Extension
Cornell Cooperative Extension

Cornell Cooperative Extension of Nassau County
Cornell Cooperative Extension of Nassau County

Cornell Cooperative Extension of Suffolk County
Cornell Cooperative Extension of Suffolk County

Farmingdale Horticulture Committee – members and fundraising events
Farmingdale Horticulture Committee

Farmingdale State University's Horticulture Program (once in website, click on Farmingdale Horticulture Committee)
Farmingdale State University's Horticulture Program

Each year the Long Island Horticultural Society Gold Medal Plant Awards Committee recognizes plants that are decorative, have exceptional qualities, are suited for Long Island growing conditions, need little to no maintenance, are relatively pest free, durable and are available. Plus, the plants are evaluated for pest resistance. The committee is comprised of Cornell Cooperative Extension specialists, nursery men and women, groundskeepers, pathologists, entomologists and garden writers.
Gold Medal Plants

The Long Island Power Authority Tree Trimming Program is described on this site.
Long Island Power Authority's Tree Trimming Program

A listing of trees that will make good street trees.
Long Island Power Authority's Wire-Friendly Trees Program

You can contact the Nassau/Suffolk Landscape Gardeners Association for a listing of member landscape maintenance companies that work in your area.
Nassau/Suffolk Landscape Gardeners Association

National Arbor Day Foundation
National Arbor Day Foundation

The National Garden Bureau was founded in 1920 to disseminate accurate information on gardening from seed. It is a non-profit organization with limited resources.
National Garden Bureau

To find an arborist or tree care professional in New Jersey.
New Jersey Arborists

To find an arborist or tree care professional in New York State.
New York State Arborists

An organization dedicated to providing education to enhance the utilization of perennial plants.
Perennial Plant Association

Click on this link for the perennial of the year. Previous winners are also on this site.
Perennial Plant Association

Plant A Row for the Hungry
Plant A Row for the Hungry

The Neighborhood Network is a source of preventive organic pest control measures for the lawn plus they have a listing of organic landscapers.
The Neighborhood Network