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Season Extension

• Start crops earlier in the spring
• Keep them going later in the fall
• Grow cool-season crops all
through the winter

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Greenhouse

Heated, mechanically vented (thermostat)

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Greenhouse

Cannon Hort Plots greenhouse: 22' x 30'
Start seedlings before last frost

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Hoophouse

Unheated, manually vented (raise sides when warm)

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Portable, in-field frost protection
Build a 17' x 100' hoop house for about $1,000

Download Plans

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Shade

Season extension:
not just for cold weather

Help fall seedlings get started, or stretch spring crops' season (protect tomatoes from sunscald)
Stretch shade cloth over hoop house or mini-hoops

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Row Cover

Less frost protection, but more portable

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Season Extension

Season Extension Resources

  • Plan Now for a Hoop House

    A hoop house built over the winter can get spring crops to market earlier, for higher prices.  Here are the Kerr Center’s plans and explanatory aids for a low-cost Hanley-style hoop house.

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  • Other Hoop House Resources

    More resources and publications about season extension from groups and universities.

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  • Hoop House Plans and Instructions

    The Kerr Center sponsored several workshops on hoop house (also known as high-tunnel or cold frame) construction.  The workshops focused on the low-cost, user-friendly design developed by producer grant recipients Tod and Jamie Hanley. These…

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  • hoophouse

    Hoophouse Materials List

    Materials and cost calculations for building a hoophouse. Published March 2011

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  • Hoop House How-To

    This slide show takes the viewer step-by-step through the process of building a low-cost hoop-house for season extension.

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Learn About: Hoop House Construction

hoop-house-how-to
Plans, instructions, and illustrations for building a low-cost Hanley-style hoop house. Learn more

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