The Garden Watchdog
- Clearinghouse for reader-supplied reviews and contact information of thousands of mail-order and internet plant sources.
- http://davesgarden.com/products/gwd/

Lawn & Garden Yellow Pages
- Links to providers of garden products and services in the US.
- http://www.lgyp.com/

Cyndi's Catalog of Garden Catalogs
- Provides information for over 2000 mail-order gardening companies, including descriptions, user evaluations, and web links where available.
- http://users.adelphia.net/~johnsonjames/

GardeningData.co.uk
- Directory of practical gardening sites, tailored for the UK. Includes glossaries, general gardening information, and projects.
- http://www.gardeningdata.co.uk/

La-info.com
- A directory of landscape and garden resources, suppliers, manufacturers and related businesses.
- http://www.la-info.com/

Scott's Botanical Links
- Links to informational botanical sites covering a wide range of topics.
- http://www.ou.edu/cas/botany-micro/bot-linx/

Rock Gardeners' Last Resort
- An index of plant and gardening databases, encyclopedias, glossaries, and dictionaries. Aimed at rock gardeners, but with many general-purpose references.
- http://rockgardener.com/last/resort.cfm

I Love Plants
- Directory of plant and garden related topics, plus links to farmer's market lists.
- http://www.iloveplants.com

Cold Climate Gardening
- Home gardener in upstate New York presents her collection of annotated links to cold-gardening resources, as well as a regularly updated garden journal.
- http://www.coldclimategardening.com/

Everything Green
- Information center for the lawn and landscape industry, with categorized links to hundreds of companies in the green industry.
- http://www.everythinggreen.com/

Gardening Resources
- Provides links to gardening sites that give information on various specialty gardening topics.
- http://mysite.verizon.net/eaglemail/

Gardening Places
- Directory of gardening websites, including seeds, catalogs, greenhouses, tools, nurseries, flowers, vegetables, organic supplies.
- http://www.gardeningplaces.com/

The Gardening Launch Pad
- Features organized lists of gardening sites.
- http://gardeninglaunchpad.com/

The Garden Gate
- Friendly site with links to online gardening resources, and tips on using these resources to answer specific questions.
- http://garden-gate.prairienet.org/

Garden Centers Online
- Provides information about various aspects of gardening, mostly in the form of lists and tables. Also a directory of garden centers in the US.
- http://www.gardencenters.com/

Anything 4 Gardening
- Links to gardening resources by category, most with brief descriptions.
- http://anything4gardening.com/

Horticulture on the Internet
- A large collection of links to resources on the internet for specific plant groups and other gardening topics.
- http://www.ces.ncsu.edu/depts/hort/consumer/hortinternet/

Backyard Garden
- Links to gardening related and Iowa information.
- http://www.backyardgarden.net

Weeds on the Internet
- Links to websites on weeds, weedcontrol and herbicides.
- http://www.ces.ncsu.edu/depts/hort/consumer/hortinternet/weeds.html

Garden Break Gardening Index
- Links to gardening sites grouped by specific categories.
- http://www.gardenbreak.com/

Garden Time Online
- Links to gardening resources, from planning a garden through harvest, for all types of gardens.
- http://gardentimeonline.com/index.htm