Daylily Sources

Northern 

Southern

Region 4 Source list
 on Tom Rood's Region 4 Website

Nor'East Daylilies:
 Specializing in Doorakian Daylily Introductions
Mary Collier Fisher

Partridge Hill Gardens
Ellen LaPrise

Mike Huben's Garden Page
Mike Huben

Cottage Gardens
New York, zone 5

North Country Daylilies Melanie Mason, Sarasota Springs, NY
Includes Brian Culver's hardy Canadian intros

Moldovan's Gardens  Steve Moldovan & Roy Woodhall,  Ohio zone 5

Crintonic Gardens Curt Hanson, Ohio, zone 5

Heavenly Gardens Jamie Gossard, Ohio

Ashwood Garden Daylily  Richard Norris in Ohio, (zone 5-6).  Good prices and also breeds some beautiful hardy seedlings.

John Benz John Benz, Ohio

CrossborderDaylilies John Peat, Toronto Canada and Florida

Daylily Traders
Co-op website of Ohio hybridizers

Gerda Brooker Ohio

Hickory Hills Gardens Pennsylvania

Hardy Daylily Garden selling and display
garden in Connecticut with Daylilies and Hosta

The Yost Family Farm Nursery and hybridizer, Ohio

Victorian Garden the Brookers, Ohio

Great Lakes Daylilies diploid hybridizer

hardyhems.com links to [some] Northern Hybridizers 

Seaside Daylilies

Vivace Nordiques

Snow Creek Gardens Washington state

Valley of the Daylilies in Ohio.  Nice website.  Also breeds spider variants.

Ensata in Michigan.  Hardy daylilies as well as many irises.

Bloomingfields Farm Daylily Catalog from Connecticut 

Northstar Daylilies Minnesota

Olallie Gardens Vermont

Willow Brook Acres Ohio

Heavenly Gardens James Gossard in Ohio

Gardens with a Northern Exposure Minnesota

Tranquil Lake (zone 6) Rehoboth, Massachusetts

Solaris Farms  Wisconsin

Northern Grown Perennials Nice selection of spiders

Thomas Daylily  Pennsylvania

R. Seawright Carlisle, Massachusetts

Windy Ridge Indiana

Daylilies-Garden-Perennial New York, zone 5

Brian Mahieu's in Missouri

Lilywood Farms, Missouri

Southern Nurseries

Linda  & Mike Butler of Georgia Bloomin' Designs sells Daylilies, Hosta, Knockout Roses  & Astilbe

Le Petit Jardin Ted Petit

Delta Breeze Daylilies  Jim Byers, California. Check out the lovely photos too.

Pleasance Daylilies Tennessee, beautiful photos 

Johnson Daylily Florida

Kinnebrew Florida

Blue Grass Daylily Gardens