Seed Propagation, Transplant Production, and Season Extension

Updated: Feb 17

Publications and Web Resources

Commercial Production of Vegetable Transplants - University of Georgia

Greenhouse Production & Engineering - Clemson Cooperative Extension

High Tunnel Crop Production Suppliers - Mississippi State University Extension Service

Organic Plug and Transplant Production - ATTRA

Solar Greenhouses - ATTRA

Starting Vegetable Transplants - Mississippi State University

Transplant Production - University of Florida Extension


Ace Hardware

Store Locator: Products/Services: Farm supplies, greenhouses, pest control, planters, heating and cooling, electrical, plumbing, etc.

American Plant Products & Supplies

9200 NW 10th, Oklahoma City, OK

405-787-4833 (fax) 405-789-2352

Contact: Products/services: Greenhouse frames, films and glazing, shade cloth, row covers, mulch film

Atlas Greenhouse Systems, Inc.

PO Box 558, Alapaha, GA 31622

800-346-9902 Products/Services: Greenhouses, high tunnels, cold frames, and other equipment

Berry Hill Irrigation, Inc.

3744 US-58 Buffalo Junction, VA 24529

434-374-5555 (fax) 434-374-0131 Products/Services: Micro-irrigation supplies

BWI Companies, Inc.- Greenville/Spartanburg

15 Shelter Drive, Greer, SC 29650

864-968-8961 (fax) 864-968-8968 Products/Services: Greenhouse containers, covering, and equipment

Carolina Greenhouses

1504 Cunningham Road, Kinston, NC 28501

800-635-4532 (fax) 252-523-3691 Products/Services: Forty different models using CAD equipment and individual customization, seeding equipment, tobacco transplants

Cousins Agri-Center, Inc.

625 Nance St., Newberry, SC 29108

P.O. Box 1232 Newberry, SC 29108

803-276-5750 (fax) 803-276-5111 Contact: Products/Services: Plant materials, seed, fertilizer, pest control, farm and livestock supplies

DripWorks, Inc.

190 Sanhedrin Circle, Willits, CA 95490 800-522-3747

Contact: Products/Services: Solexx Greenhouses


1440 Field of Dreams Way, Dyersville, IA 52040

800-245-9881 Products/Services: Agricultural products, livestock barns, hydroponic fodder systems, greenhouses and high tunnels

Fifth Season Gardening

Locations in Asheville, Carrboro, Charlottesville, Greensboro, and Raleigh Products/Services: Feed, compost, cover crop, fertilizer, seeds, soil amendments, tools and equipment

Handi House of Oak Grove

4508 August Rd, Lexington, SC 29073

803-957-3801 Products/Services: Steel stud greenhouses

Harris Seeds

355 Paul Rd, Rochester, NY 14624

800-544-7938 (fax) 877-892-9197

Contact: Products/Services: Treated, untreated, and organic vegetable, herb, flower, seeds; transplants, plubs and liners; growing supplies

Haygrove Inc.

694 Kraybill Church Rd, Mount Joy, PA 17552 717-492-4955 (fax) 717-492-4959 Products/Services: High tunnels, substrate growing systems

Holly Hill Farm Center hc_location=timeline

314 State Road S-38-119, Holly Hill, SC 29059

843-496-5000 Products/Services: Precision planting dealer, soil testing


8765 Vollmer Rd., Colorado Springs, CO 80908-4710


Contact: Products/Services: Greenhouse supplies, organic fertilizers, pest management supplies, beneficial insects, books, seeds, general supplies


PO Box 685, Irmo, SC 29603

803-798-4000 Products/Services: Complete line of greenhouse structures; accessories including film fastening systems, inflation blowers, polycarbonate sheets, and poly patch

Johnny’s Seeds

13 Main Street, Fairfield, Maine 04975

207-861-3900 (fax) 800-738-6314

Contact: Products/Services: Organic, heirloom, cover crop, vegetable, fruit, flowers, herbs, tools and equipment


355 Paul Road, Rochester, NY 14624

800-336-8882 (fax) 585-295-3608

Contact: Products/Services: Row covers, plastic mulch, planters, paper mulch, low tunnels

Peaceful Valley Farm Supply

125 Clydesdale Court, Grass Valley, CA 95945


Contact: Products/Services: Row covers, pest management, tools, propagation supplies, etc.

RKW Klerks Inc.

527 Mahlon Rd, Chester, SC 29706

803-374-7308 (fax) 803-789-4045 Products/Services: Polyethylene films such as greenhouse films, overwintering nursery films, silage bags, silage sheeting; wholesale distribution only

Sea Island Savory Herbs

5920 Chisolm Road, Johns Island, SC 29455


Contact: Products/Services: Plant material/transplants, perennials

Seven Springs Farm

426 Jerry Lane NE, Check, VA 24072

540-651-3228 Products/Services: Row cover, fabrics and plastics

Stuewe & Sons, Inc.

21933 Rolland Drive, Tangent, OR 97389

541-757-7798 (fax) 541-754-6617 Products/Services: “Groove tube” growing system for transplants

Stuppy Greenhouse Manufacturing

1212 Clay Street, Kansas City, MO 64116 800-733-5025 Contact: Products/Services: Coldframes and greenhouses

Williamson Greenhouses

1469 Beulah Rd., Clinton, NC 28328

910-592-7072 Products/Services: Greenhouses and greenhouse equipment, transplanters, Cropbox

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