Gardening Links


National Plant Diagnostic Network

national plant diagnostic network map

The NPDN was established in 2002 in response to the need to enhance agricultural security through protecting health and productivity of plants in agricultural and natural ecosystems in the U.S. With support from the USDA-NIFA and through the collective efforts of many individuals representing Land Grant Universities, federal agencies, state departments of agriculture, and other stakeholders, the NPDN has grown into an internationally respected consortium of plant diagnostic laboratories.


Soil TestingTick Testing | Plant Disease | Plant Pests


The University of Connecticut IPM Program staff members work directly with and provide educational outreach to commercial growers, natural area managers, groundskeepers, educators and the general public in Connecticut. In addition, they conduct research and offer extension programs in these areas: Fruit, Greenhouse, Invasive Species, IPM Curriculum, Nursery, Turf & Landscape and Vegetables.


UCONN Soil Test Lab 

Free Soil pH Tests:
Twice each year the Soil Nutrient Analysis Laboratory offers free soil pH testing along with limestone recommendations to the general more


Ohio State University Virtual Webgarden

A great site to find plant fact sheets and a plant encyclopedia. A searchable database of high quality images featuring Ornamental plants, Turf, Plant Diseases, and Insects.
- Daily reminders on what is (or should be) happening in your landscape.

american horticultural society logo 

The American Horticultural Society

Through its educational programs, awards, and publications, the AHS connects people to gardening, raises awareness of earth-friendly gardening practices, introduces children to plants, brings together leaders to address important national issues, and showcases the art and science of horticulture.
The American Horticultural Society. (AHS) is one of the oldest national gardening organizations in the country. Since 1922, it has provided America's gardeners with the highest quality gardening and horticultural education possible.

ct rose society logo

Connecticut Rose Society

The Connecticut Rose Society was founded in 1980 as a non-profit, educational organization for the purpose of teaching people to grow better roses.  Through our educational programs and annual Rose Show, we promote the appreciation and growing of roses. Consulting Rosarians (CRs) are members of the American Rose Society and active members of a local society. They comprise a national network of local rose experts, ready and willing to give expert advice.

American Hemerocallis Society

The American Hemerocallis Society

Regional newsletters (usually two to four published annually) for the area in which you live – IN ADDITION TO the four issues of The Daylily Journal. Link to the American Hemerocallis Society to find out about regional daylily activities, FAQ's and awards.
The AHS is organized exclusively for educational and scientific purposes, and especially to promote, encourage, and foster the development and improvement of the genus Hemerocallis


Cooperative Extension System
College of Agriculture and Natural Resources

County Extension Centers coordinates the Master Gardener Program and Home Horticulture Program. Provides plant diagnostic services. Answers gardening, wildlife and insect questions.
UConn Extension connects the power of UConn research to local issues by creating practical, science-based answers to complex problems. Extension provides scientific knowledge and expertise to the public in areas such as: economic viability, business and industry, community development, agriculture and natural resources.

UConn Extension Locations


UConn Home & Garden Education Center

The goal of the UConn Home & Garden Education Center is to be a highly respected and visible educational outreach program to the citizens of Connecticut. The Center is designed to meet the needs of an increasingly sophisticated audience by providing accurate, thorough and timely information on a wide variety of issues. The Center is the Northeast Regional First Responder to eXtension ‘Ask the Expert’ questions.

University of Connecticut Horticulture Fact Sheets Online
Loads of info about lawn care, deer damage control, plant diseases, beneficial insects, poison ivy, and much more.

Brooklyn Botantic Garden

Explore a Lush Rain Forest. Have a Desert Adventure. Be Wowed by Glasshouse Blooms.
Brooklyn Botanic Garden is an urban botanic garden that connects people to the world of plants, fostering delight and curiosity while inspiring an appreciation and sense of stewardship of the environment.


The New York Botanical Garden

With renowned horticulture, science, and education programs, there's something new to discover in every season at the Garden. NYBG operates one of the world's largest plant research and conservation programs, with nearly 200 staff members (including 80 Ph.D. scientists) working in the Garden's state-of-the-art molecular labs as well as in the field, where they lead programs in 49 countries.

International Clematis Society Logo 

Clematis International Society

 Clematis resource from beginners to experts enjoy this site.
 News, pictures, info and FAQ's.


American Iris Society

The American Iris Society is a nonprofit institution incorporated February 2, 1927, in the County of Philadelphia, State of Pennsylvania. By the terms of the Charter, the Corporation has no stockholders and exists for the sole purpose of promoting the culture and improvement of the Iris.


The American Rose Society

The society and its members strive to provide educational services to encourage the greater use of our national flower in private and public gardens.


Ecology & Evolutionary Biology Conservatory

Biodiversity Education & Research Greenhouses

Lots of plant information, data and research
The EEB Plant Growth Facilities support the educational and research goals of the Department of Ecology & Evolutionary Biology in the College of Liberal Arts and Sciences at the University of Connecticut. It serves these needs by...more

iwgs logo
Gateway To Water Gardening

International Waterlily
and Water Gardening Society (IWGS)

Numerous articles and extensive galleries of images providing "how to" tips, plant identification and cultivation

A spectacular 28-acre public garden and cultural center overlooking the Hudson River and Palisades in the Bronx, Wave Hill’s vibrant landscape is one of the most beautiful spots in New York City.


American Conifer Society

Data Base, Photos, Topics


The North American Rock Garden Society

NARGS is for gardening enthusiasts interested in alpine, saxatile, and low-growing perennials. It encourages the study and cultivation of wildflowers that grow well among rocks, whether such plants originate above treeline or at lower elevations. Through its publications, meetings, and garden visits, NARGS provides extensive opportunities for both beginners and experts to expand their knowledge of plant cultivation and propagation, and of construction, maintenance, and design of special interest gardens. Woodland gardens, bog gardens, raised beds, planted walls, container gardens, and alpine berms are all addressed.


The Cactus & Succulent Society of America

The Cactus and Succulent Society of America (CSSA)
was founded in international organization dedicated to education, protection and preservation of some of nature's most unique creations

cornell garden based learning

Gardening Resources

Garden Based Learning

Your portal to gardening information at Cornell University


The American Orchid Society

An online reference of orchid info
The American Orchid Society is more than just a flower club.  Throughout its 95-year history the AOS, in keeping with its vision and mission, has strived to bring our members timely and state-of-the-art orchid information, support basic and applied research in orchids, and monitor and support conservation effort both here in North America as well as throughout the World..


Cambridge University

Botanic Garden
"A 40 acre oasis of beautifully landscaped gardens and glasshouses right in the heart of the city"
The Garden is an inspirational, natural outdoor classroom for all ages; a place to develop knowledge, encourage creativity and bring learning to life.

Revised and Updated November 2016