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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Sale

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

Sale

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

Tufflite Nursery Clear™ – 10' x 100'

Greenhouse Film

Preferred winter covering for Quick Hoops.

Sale

Tufflite IV™ – 28' x 125' Tufflite™

Tufflite IV™ – 28' x 125'

Greenhouse Film

28-feet wide x 125-feet long

Sale

Univent Automatic Opener Vents and Vent Openers

Univent Automatic Opener

Keep your cold frame plants in their "comfort zone."

Sale

Tufflite IV™ – 24' x 65' Tufflite™

Tufflite IV™ – 24' x 65'

Greenhouse Film

24-feet wide x 65-feet long

Sale

Ground Post Driver Hardware & Accessories

Ground Post Driver

Prevents ground posts from deforming. Fits into 1 5/8" ground post.

Sale

Tufflite IV™ – 28' x 65' Tufflite™

Tufflite IV™ – 28' x 65'

Greenhouse Film

28-feet wide x 65-feet long

Sale

Tufflite IV™ – 20' x 125' Tufflite™

Tufflite IV™ – 20' x 125'

Greenhouse Film

20-feet wide x 125-feet long

Sale

Tufflite IV™ – 20' x 65' Tufflite™

Tufflite IV™ – 20' x 65'

Greenhouse Film

20-feet wide x 65-feet long

Sale

High Tunnel Vent w/ Auto Opener – 12" x 12" Vents and Vent Openers

High Tunnel Vent w/ Auto Opener – 12" x 12"

Provides additional greenhouse ventilation in hot conditions.

Sale

Univent Automatic Vent and Window Opener Vents and Vent Openers

Univent Automatic Vent and Window Opener

Universal, for greenhouse and cold frame applications.

Sale

Tufflite IV™ – 28' x 100' Tufflite™

Tufflite IV™ – 28' x 100'

Greenhouse Film

28-feet wide x 100-feet long

Sale

Tufflite IV™ – 32' x 100' Tufflite™

Tufflite IV™ – 32' x 100'

Greenhouse Film

32-feet wide x 100-feet long

Sale

Tufflite IV™ – 24' x 125' Tufflite™

Tufflite IV™ – 24' x 125'

Greenhouse Film

24-feet wide x 125-feet long

Sale

High Tunnel Vent w/ Auto Opener – 30" x 30" Vents and Vent Openers

High Tunnel Vent w/ Auto Opener – 30" x 30"

Provides additional greenhouse ventilation in hot conditions.

Sale

High Tunnel Vent w/ Auto Opener – 24" x 24" Vents and Vent Openers

High Tunnel Vent w/ Auto Opener – 24" x 24"

Provides additional greenhouse ventilation in hot conditions.

Sale

High Tunnel Vent w/ Auto Opener – 18" x 18" Vents and Vent Openers

High Tunnel Vent w/ Auto Opener – 18" x 18"

Provides additional greenhouse ventilation in hot conditions.

Sale

Sidewall Hand Crank Hardware & Accessories

Sidewall Hand Crank

Quickly adjust tunnel sidewalls and hold them at desired height.