BHG
The Better Homes and Gardens site provides a vast group of resources on flower gardening. The site has articles, a garden planner, slide shows, a plant database and directions for garden projects and garden crafts.
Bulb.com
The U.S. Netherlands Flower Bulb Information Center (NFBIC) is the U.S. press office of the Dutch flower bulb industry and provides a tresure chest of information about bulbs at this site.
Burpee
Burpee’s site is essentially a catalog online, but each selection contains a short description and planting information. The Garden Wizard recommends plants for certain areas of the garden.
Do-It-Yourself -- Flowers
Over 75 articles present how-to information and specific plant information. Many articles are authored by staff from the National Gardening Association.
FlowerWeb
FlowerWeb is primarily for the floriculture industry, but Flowerbase provides pictures and flower names in several languages.
Garden Guides -- Flower Gardening
Wonderful descriptions with pictures or photographs of common and rare garden plants.
The Gardener's Network
This site provides a short article for each of the plants described.
HGTV
HGTV”s pages have directions on many aspects of flower growing and a large number of pages devoted to various types of flowers.
Home Depot
Home Depot’s Plant Finder helps find the right plants based on growing conditions, color, and more and provides short tabular information on a wide variety of flowers. The problem solver from Ortho helps diagnose common garden problems.
Lowe's
From propagation to irrigation, Lowe’s Web pages have directions and information on many aspects of flower gardening
This site is an online catalog, however each entry contains a description and basic growing information for the plants which may be valuable to gardeners.
Perry's Perennials
Created by Dr. Leonard Perry at the University of Vermont, this site has some excellent features. Especially notable are the Photos and Files that give basic information on specific perennials and Perennial Publications which provides short book reviews on volumes that emphasize perennials.
Vesey's
Growing Flowers from Seeds
Victory Garden
The Know How section has directions for several types of flower gardening projects.
This catalog contains detailed descriptions of less common plants with information on growing conditions. Many entries are for less common plants.
Flower Gardening Made Easy
Yvonne Cunnington, Author of Clueless in the Garden, a guide for new gardeners provides descriptions and directions for many types of garden.
Resources from State Cooperative Extension Service
Colorado
Flowers at Gardening Online Factsheets
Minnesota
Links to publications
Missouri
Flowers and Houseplants
New York
Cornell gardening resources: Flowers
North Dakota
Landscaping and Flower Publications
Oregon
Flower Growing Information
South Carolina -- Clemson
Flowers, Publications