Greenhouse & Tunnel Supplies | Johnny's Selected Seeds

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Whether you grow from earliest spring to late fall or run your production year-round, our season-extension supplies provide the versatility and durability you need to protect your crops from the elements. We offer greenhouse film; benders and jigs for high tunnels and low tunnels; and supports, anchors, and hardware to keep it all together. Use our calculators and construction manuals to plan ahead, estimate costs, and determine the right season-extension configuration, components, and quantities.

Planning Tools & Calculators | Interactive Apps & Spreadsheets from Johnny's

42 Products

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Poly Patch Repair Tape – 6" Hardware & Accessories

Poly Patch Repair Tape – 6"

For everything from small patch jobs to splicing large sheets together.

Poly Patch Repair Tape – 4" Hardware & Accessories

Poly Patch Repair Tape – 4"

For everything from small patch jobs to splicing large sheets together.

Cross Connectors – 2 Count Hardware & Accessories

Cross Connectors – 2 Count

Save time, money and make structures stronger.

Poly Latch Wire, 4' – 20 Count Hardware & Accessories

Poly Latch Wire, 4' – 20 Count

Convenient system for securing high tunnel coverings.

Poly Latch Channel, 8' – 10 Count Hardware & Accessories

Poly Latch Channel, 8' – 10 Count

Convenient system for securing high tunnel coverings.

End Rail Clamp, 1 3/8" – 10 Count Hardware & Accessories

End Rail Clamp, 1 3/8" – 10 Count

A very versatile piece of greenhouse hardware.

Brace Band, 1 3/8" – 20 Count Hardware & Accessories

Brace Band, 1 3/8" – 20 Count

For securing the ends of collar ties and angle braces to bows.

Bobcat High Tunnel Kit – Pro High Tunnel Kits

Bobcat High Tunnel Kit – Pro

Build your own durable, professional-grade high tunnel.

Bobcat High Tunnel Kit – Standard High Tunnel Kits

Bobcat High Tunnel Kit – Standard

Build your own durable, professional-grade high tunnel.

Low Tunnel Hoop Bender – 4' Benders

Low Tunnel Hoop Bender – 4'

Quick Hoops™

Create heavy-duty low tunnels that will last for years.

Low Tunnel Hoop Bender – 3' Benders

Low Tunnel Hoop Bender – 3'

Quick Hoops™

Create heavy-duty low tunnels that will last for years.

Gothic Tunnel Hoop Bender – 14' Benders

Gothic Tunnel Hoop Bender – 14'

Quick Hoops™

Bends Gothic arch-shaped bows to shed snow more efficiently.

High Tunnel Hoop Bender – 12' Benders

High Tunnel Hoop Bender – 12'

Quick Hoops™

Bends 13-14' wide hoops that compress into ground posts for high tunnel.

Low Tunnel Hoop Bender – 6' Benders

Low Tunnel Hoop Bender – 6'

Quick Hoops™

Create heavy-duty low tunnels that will last for years.

Out Of Stock

Tufflite Nursery Clear™ – 10' x 100' Tufflite™

Tufflite Nursery Clear™ – 10' x 100'

Greenhouse Film

Preferred winter covering for Quick Hoops.

Automatic Ventilation Kit High Tunnel Kits

Automatic Ventilation Kit

Bobcat High Tunnel Kit Accessory

Thermostatically controlled venting system.

Truss Support Kit High Tunnel Kits

Truss Support Kit

Bobcat High Tunnel Kit Accessory

Doubles the strength of the greenhouse.

Sliding Door Kit High Tunnel Kits

Sliding Door Kit

Bobcat High Tunnel Kit Accessory

Easy tunnel access, even in snow.