Empire National Nursery
Growers of fast growing trees and shrubs for landscaping planting projects.

Select Plus International Lilac Nursery
Quebec-based grower of species, hybrid and cultivar lilacs, including heirloom and rare varieties. Ships to US. Also sells perennials.

Carlson's Gardens
New York grower of azaleas, rhododendrons and mountain laurels.

Girard Nurseries
Ohio nursery specializing in flowering trees and shrubs, particularly azaleas and rhododendrons.

Hydrangeas Plus
Oregon nursery specializing in a large selection of species and cultivars of hydrangea. Includes images and information.

Fox Hill Lilac Nursery
Maine lilac nursery growing over 90 different cultivars of lilacs.

Shepherd Hill Farms
New York State nursery raising cold-hardy rhododendrons and azaleas.

Wilkerson Mill Gardens
Specializing in hydrangeas and offering a selection of other shrubs and some trees.

Nantucket Hydrangea & Hydrangea Farm Nursery
Offers and extensive listing of hydrangea cultivars. Many varieties, a few pictures.

Hydrangea Select
Hydrangea nursery with over 75 varieties in all colors. Climbing vines, shrubs, and tree varieties, along with how-to tips for growing successful hydrangeas.