North Creek Nurseries
- Supplier of perennials, grasses, ferns, native plants, and shrubs in Pennsylvania. Assortment list with photos.
- http://www.northcreeknurseries.com/

Shady Oaks Nursery, LLC
- Specializes in the wholesale propagation of new and hard to find perennial plants, emphasizing hostas. Located in Minnesota.
- http://www.shadyoaks.com/

Peony Anna & Co., Ltd
- Hong Kong representative for Junfeng Horticulture Company (China), selling Chinese tree peonies. Photo gallery, terms and conditions, order form.
- http://www.peonyanna.com/

Heemskerk Vaste Planten
- Nursery in the Netherlands produces perennials for wholesale and export. The assortment includes daylilies, hostas, irises, and peonies, as well as a range of other common garden perennials.
- http://www.heemskerkplants.com/

China Peony Flowers
- Provider of herbaceous and tree peonies in China. Overview and photos of assortment, which also includes several woody ornamentals.
- http://www.cnpeonyflowers.com/

Donahue's
- Specialist clematis nursery offering retail sales at their Minnesota greenhouse, and wholesale to plant retailers.
- http://www.donahuesclematis.com/

Roseville Farms
- Florida grower of clematis. Lists packaging and display options and includes images of farm and varieties offered.
- http://www.rosevillefarms.com/

Clematis Container Nursery
- Retail, wholesale, and export grower of clematis in Poland. Includes encyclopedic reference with information and photos of several hundred species.
- http://www.clematis.com.pl/

Garden Splendor
- Markets feature plants and named plant collections, available through garden centers in various areas of the US.
- http://www.gardensplendor.com/

Buyperennials.com
- Wholesale supplier of bare-root perennials, shipping from the Netherlands to Europe and the US. Product range includes commonly grown garden subjects, available for online ordering in lots of 25. Illustrated catalog, grower information.
- http://www.buyperennials.com/

W. Schenk
- Information on peonies, the varieties available, and their cultivation. Netherlands.
- http://www.schenkpioenen.nl/

Strand Nursery Company
- Wholesale supplier of dormant bare root ferns and wildflowers to retail nurseries and landscapers throughout the US. Emphasis is on Wisconsin natives. Company profile and product listing.
- http://www.strandnursery.com/

Tall Bearded Irises
- Grower of over several hundred tall bearded iris varieties, located in Virginia. Offers gallon-sized potted plants and bare root rhizomes by mail order in summer. Catalog request by e-mail.
- http://www.autumnsfolly.com/

Emerisa gardens
- Wholesale and retail nursery in Santa Rosa, California specializing in four-inch potted plants emphasizing hardy and unusual perennials, herbs, and ornamental grasses, and other plants suitable for Mediterranean climates.
- http://www.emerisa.com/

Kampjes Gardens
- Wholesale nursery producings peonies for sale to New Zealand cut-flower growers and for export. Photo gallery of available varieties.
- http://www.kampjesgardens.com/

Northwest Ornamental Grasses
- Wholesale nursery offering a large selection of ornamental grasses and grass-like plants, in sizes ranging from 128-cell liners to 5-gallon containers. Products, pricing, and availability, with photo catalog. Located in Washington state.
- http://www.northwestornamentalgrasses.com/

Blooms of Bressingham
- Growers of herbaceous perennials and alpines. Detailed plant listing and links to distributors.
- http://www.bobna.com/

Quinton Nursery, LLC
- Wholesale grower of liriopes, perennials, ornamental grasses, and groundcovers.
- http://quintonnursery.com/

Terra Nova Nurseries, Inc.
- Oregon breeder and wholesaler of select perennials.
- http://www.terranovanurseries.com/

Native Sons Wholesale Nursery Inc.
- A wholesale nursery specializing in California natives, mediterrean perennials, grasses, and herbs. Online plant descriptions and PDF catalog.
- http://www.nativeson.com/

Heze Oriental Flowers & Trees
- Chinese grower and exporter of tree and herbaceous Paeonia. Company profile, product list and contacts.
- http://hoftco.51.net/

Northwest Horticulture
- Large-scale grower of perennials in Washington, selling to growers and retailers at various sizes and maturities. Online product listing with photo and description for each variety.
- http://www.northwesthort.com/

Paionia
- Offers a selection of bare-root peonies. Photos of varieties offered, form for price inquiries. Located in the Netherlands.
- http://www.paionia.com/

Emerald Coast Growers
- Wholesale producer of perennials and ornamental grasses, sells to growers and through plant brokers. Company information, overview of offerings and availability.
- http://www.ecgrowers.com/

Millcreek Gardens LLC
- Producer and wholesaler of container grown herbaceous perennials, herbs, and ornamental grasses. Located in Ostrander, Ohio.
- http://www.millcreekgardensohio.com/

International Hardy Plant Union
- Organisation of nurseries, institutions and individuals with a professional interest in perennials from Europe, the USA, Canada, and Japan. Information about membership, yearbooks and activities, and the perennial plant register.
- http://www.isu-perennials.org/