Some helpful websites:

NCSU Cooperative Extension's Horticulture Information Leaflets. Get gardening information and plant lists tailored for North Carolina. There's a great wealth of info here.
www.ces.ncsu.edu/depts/hort/index.html

Poisonous Plants of North Carolina.
Worried about planting poisonous plants? Here's a comprehensive list of poisonous plants in North Carolina by common and scientific name.
www.ces.ncsu.edu/depts/hort/consumer/poison/poison.htm

Pesticide Information Profiles
Interested in learning about the chemicals in your pesticides and herbicides and how they affect people, animals, and the environment? Click on this link for Extoxnet's Pesticide Information Profiles.
http://extoxnet.orst.edu/pips/ghindex.html

Ketzel Levine's 'Talking Plants'
Read gardening articles and listen to archived radio broadcasts of "Talking Plants" with National Public Radio's Doyenne of Dirt, Ketzel Levine.
www.npr.org/programs/talkingplants/

United States National Arboretum
Includes the USDA Plant Hardiness Zone Map, information on new plant introductions and releases, monthly pest management tips, a calendar of arboretum events and activities, and more.
www.usna.usda.gov

JC Raulston Arboretum at NC State University
Check out the website for Raleigh's own J.C. Raulston Arboretum, a wonderful place to visit and learn. Enjoy their long Perennial Border, White Garden, Rose Garden, Paradise Garden, beautiful lathe house, and much more. Sign up for the newsletter and become a member so you can support the arboretum as well as get member benefits such as free or reduced admission to their special events and local businesses. Arboretum members get a 10% discount on trees and shrubs at Homewood!
http://www.ncsu.edu/jcraulstonarboretum/

The North Carolina Botanical Garden, Chapel Hill
The North Carolina Botanical Garden is part of The University of North Carolina at Chapel Hill. They further the University's mission of teaching, research, and public service through their own mission: "To inspire understanding, appreciation, and conservation of plants in gardens and natural areas and to advance a sustainable relationship between people and nature."
http://www.ncbg.unc.edu/

Ever wonder what all those Latin botanical names mean? Look them up in a Dictionary of Botanical Epithets. Fun for the curious or seriously plant-nerdy.
www.winternet.com/~chuckg/dictionary.html

Informations Sheets Available at Homewood:
Planting Guide for Trees & Shrubs
Triangle Gardening Tips for Newcomers
Drought Tolerant Annuals
Drought Tolerant Plants
Pruning Trees & Shrubs
Deer Resistant Plants
Preparing Annual Flower Beds/How Many Plants Do I Need?
Ten Tough Houseplants and more
Heavenly Hydrangeas
Enjoy Your Azaleas & Rhododendrons
Vine Selection & Care
Rose Planting & Care
Japanese Maple Planting & Care
Butterfly Plants
Hummingbird Plants
Great Groundcovers
Attracting Birds With Plants
Evergreen Flowering Plants
Great Screening Plants
Herb Gardening
Container Gardening Basics
Plants for Damp Areas
Plants for a Cutting Garden
Plants for the Autumn Garden
How to Make a Spring Bulb & Pansy Combo Planter
Fragrant Plants
Great Trees for Fall Color
Rabbit Control & Resistant Plants
Controlling Moles & Voles
How To Read Your Soil Test Report
Essentials of Composting
Perennial Gardening Basics
Pruning Clematis
Starting Plants from Seeds
Pansy Care
Basic Bonsai Care
Watering Your Garden
Winter Interest Plants
Water Gardening