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Steady Harvest High Tunnels

Discover our Steady Harvest High Tunnels, showcasing our ultra-durable greenhouses and the variety of options we offer.

Steady Harvest High Tunnels

Greenhouse Products

Steady Harvest High Tunnels stand as a beacon of ingenuity and excellence. Crafted to create the perfect conditions for your flora, these structures shield your plants from severe weather, pests, and various obstacles, all while giving you the power to adjust temperature, humidity, and air flow. Catering to the diverse requirements of hobbyist gardeners, experienced cultivators, and professional agriculturalists alike, Steady Harvest High Tunnels are customized to meet your specific aspirations and needs.

Benefits of Using Steady Harvest High Tunnels

  • Cutting-Edge Design:
    At the leading edge of controlled environment agriculture, Steady Harvest High Tunnels provide growers with advanced solutions for enhancing crop growth.
  • Superior Durability:
    With robust construction featuring peaked roofs and thick tubing, Steady Harvest high tunnels are built to withstand the challenges of Northern Arizona’s diverse climate.
  • Personalized Solutions:
    Addressing the distinct needs of various growers, from providing warmth in cooler regions to offering shade in warmer areas, Steady Harvest ensures each high tunnel is perfectly suited to its intended use.
  • Total Environmental Control:
    Offering unmatched control over temperature, humidity, and air circulation, these greenhouses create the perfect conditions for thriving plants.
  • Customizable Options:
    Steady Harvest High Tunnels can be adapted to suit specific agricultural objectives, ensuring a perfect match for each grower’s needs.
  • Efficiency Optimization:
    Designed for peak production efficiency, these greenhouses are ideal for those in commercial cultivation seeking to maximize output.
  • Expert Support:
    From setup to ongoing management, Steady Harvest offers expert advice and support, ensuring growers get the most out of their greenhouses.
  • Local Specialization:
    Tailored to Northern Arizona’s unique environment, Steady Harvest high tunnels support sustainable local produce cultivation, in partnership with the community and local experts.
  • Sustainability Focus:
    Committed to a sustainable future, Steady Harvest advocates for responsible food production and community engagement in food systems, embracing a global perspective on local action.
  • Growth and Community Vision:
    Steady Harvest is dedicated to fostering not just agricultural growth, but also building resilient communities through practices that unite innovation with tradition, promising a legacy of shared success.

  • MiniTunnel – Roll-Up Raised Bed Covering

    Starting Price: $0
    Transform your garden into a thriving oasis with our MiniTunnel Roll-Up Raised Bed Covering, designed to protect and nurture your plants, ensuring optimal growth and productivity. This high-quality garden accessory is perfect for both novice and experienced gardeners looking to extend their growing season and shield their plants from harsh weather conditions.
    Select Options

  • 8 x 12 High Tunnel Greenhouse

    Starting Price: $2,699
    Perfect for small gardens, the 8 x 12 High Tunnel Greenhouse maximizes limited space. Its compact design fits easily into smaller areas, making it ideal for growing a variety of plants. The tunnel’s structure is designed to withstand adverse weather, while its clear cover allows sunlight to nourish plants, extending the growing season effectively. All of our greenhouses can be extended in 4′ increments.
    Select Options

  • 10 x 12 High Tunnel Greenhouse

    Starting Price: $2,899
    The 10 x 12 High Tunnel Greenhouse offers a bit more room than its smaller counterpart, making it suitable for gardeners looking to expand their plant variety without requiring a large space. This size provides a perfect balance between manageability and capacity, ensuring your plants are well-protected and thrive under optimal light conditions. All of our greenhouses can be extended in 4′ increments.
    Select Options

  • 12 x 12 High Tunnel Greenhouse

    Starting Price: $3,099
    Square in shape, the 12 x 12 High Tunnel Greenhouse is versatile for various gardening needs, from vegetables to flowers. It’s an excellent option for those seeking a medium-sized structure that combines easy access with ample growing space. The tunnel’s durability and transparent cover support plant health and productivity throughout the year. All of our greenhouses can be extended in 4′ increments.
    Select Options

  • 14 x 16 High Tunnel Greenhouse

    Starting Price: $3,899
    The 14 x 16 High Tunnel Greenhouse steps up in size, offering substantial space for more extensive gardening projects. Ideal for serious gardeners or small-scale commercial growers, this tunnel accommodates a larger diversity of crops and supports greater yield. Its sturdy build and effective coverage ensure plant protection and enhanced growth conditions. All of our greenhouses can be extended in 4′ increments.
    Select Options

  • 20 x 20 High Tunnel Greenhouse

    Starting Price: $5,399
    The largest in the series, the 20 x 20 High Tunnel Greenhouse is designed for ambitious gardening endeavors, providing extensive space for a wide variety of plants. This tunnel is perfect for those looking to maximize their gardening potential, offering robust protection against the elements and optimal light penetration for year-round cultivation. All of our greenhouses can be extended in 4′ increments.
    Select Options

  • MiniTunnel – Roll-Up Raised Bed Covering

    Transform your garden into a thriving oasis with our MiniTunnel Roll-Up Raised Bed Covering, designed to protect and nurture your plants, ensuring optimal growth and productivity. This high-quality garden accessory is perfect for both novice and experienced gardeners looking to extend their growing season and shield their plants from harsh weather conditions.
    Start Your Order

  • 8 x 12 High Tunnel Greenhouse

    Perfect for small gardens, the 8 x 12 High Tunnel Greenhouse maximizes limited space. Its compact design fits easily into smaller areas, making it ideal for growing a variety of plants. The tunnel’s structure is designed to withstand adverse weather, while its clear cover allows sunlight to nourish plants, extending the growing season effectively. All of our greenhouses can be extended in 4′ increments.
    Start Your Order

  • 10 x 12 High Tunnel Greenhouse

    The 10 x 12 High Tunnel Greenhouse offers a bit more room than its smaller counterpart, making it suitable for gardeners looking to expand their plant variety without requiring a large space. This size provides a perfect balance between manageability and capacity, ensuring your plants are well-protected and thrive under optimal light conditions. All of our greenhouses can be extended in 4′ increments.
    Start Your Order

  • 12 x 12 High Tunnel Greenhouse

    Square in shape, the 12 x 12 High Tunnel Greenhouse is versatile for various gardening needs, from vegetables to flowers. It’s an excellent option for those seeking a medium-sized structure that combines easy access with ample growing space. The tunnel’s durability and transparent cover support plant health and productivity throughout the year. All of our greenhouses can be extended in 4′ increments.
    Start Your Order

  • 14 x 16 High Tunnel Greenhouse

    The 14 x 16 High Tunnel Greenhouse steps up in size, offering substantial space for more extensive gardening projects. Ideal for serious gardeners or small-scale commercial growers, this tunnel accommodates a larger diversity of crops and supports greater yield. Its sturdy build and effective coverage ensure plant protection and enhanced growth conditions. All of our greenhouses can be extended in 4′ increments.
    Start Your Order

  • 20 x 20 High Tunnel Greenhouse

    The largest in the series, the 20 x 20 High Tunnel Greenhouse is designed for ambitious gardening endeavors, providing extensive space for a wide variety of plants. This tunnel is perfect for those looking to maximize their gardening potential, offering robust protection against the elements and optimal light penetration for year-round cultivation. All of our greenhouses can be extended in 4′ increments.
    Start Your Order

Steady Harvest High Tunnels

Product Specifications

We alleviate the complexity of selecting the right structural features by pre-determining the optimal roof shape, bracing, and truss supports essential for Arizona’s unique weather challenges. This approach not only saves our customers valuable time and effort but also avoids the extra costs associated with customizing these critical elements. Our goal is to provide absolute peace of mind, knowing that even our standard kits are engineered to endure.

  • High Tunnel Roll-Up Sides

    • Tall Vertical Sidewalls
      All of our units have vertical sidewalls at least 5’ high to maximize headroom and passive ventilation capacity with our standard roll-up sides.
    • Hip Channel
      Double Wire Channel Aluminum Extrusion; allows top and side poly to be serviced independently; can fit multiple layers of poly for inflated top poly system, or layers of poly and shade cloth if desired.
    • Base Board
      Pressure Treated Lumber; our kits come standard with 2” x 6”s ; a taller base board (ex. 2” x 10”) is available upon request; can be sourced locally on DIY kits to save shipping cost.
    • Wind Panels
      10mil SolaScrim™ (more info below) comes standard; these help bolster the structure against high wind loads; units shorter than 16’ may want to forego these if maximum ventilation is a priority, and price will be waived, if so; they can always be added later!
    • Simple Crank Handle Design
      Easy, functional, low tech on purpose; can be upgraded to a geared-ratio operator with internal brake that increases ease of operation on large units (not necessary for most smaller units).
    • Anti-Billow Rope & EZ Snap Hooks
      ¼” Solid Braid Polyester anti-billow rope is naturally UV resistant; paired with EZ Snap Hooks placed in the hip channel and screwed into the base board, the anti-billow ropes help hold the roll up sides in place and prevent excessive billowing, which could lead to damage of the poly. EZ Snap Hooks also provide another way to attach shade cloth if desired.
    • Wiggle Wire
      Standard width and 4’ lengths make it easy to handle; made of stainless steel for a corrosion-free lifetime of performance.

  • High Tunnel End Walls

    • End Wall Ground Posts
      1.66” OD x .060” galv. steel tube; 4’ long, driven 3’ into ground.
    • All End Wall Framing
      2″ Square x .060” thick galv. steel tube; all our kits come standard with end wall framing that accepts a 36” x 80” personnel door on both ends.
    • Personnel Door
      (1) 36″ x 80″ ¾ Glass Storm Door comes standard; a second door can be added; for DIY kit, these can be sourced locally to reduce shipping costs and chances of damage in shipping; we can also make roll-up end doors if a larger opening is desired.
    • Single Wire Channel
      This channel is deep enough to accept multiple layers of poly; it is placed on the end bows, across the bottom of the end wall frame, and around doors to securely attach poly using wiggle wire and allow for easy future servicing.
    • Wiggle Wire
      Standard width and 4’ lengths make it easy to handle; made of stainless steel for a corrosion-free lifetime of performance.
    • End Wall Covering (Solexx)
      Solexx tops the charts for greenhouse covering options due to its superior performance (read more about the benefits of Solexx), which means high heat retention and less temperature fluctuation for your plants and lower heating bills for you!
    • End Wall Covering (Americover)
      10mil Solascrim™ (more info below) comes standard with all our kits; we also offer 6mil film, 6mil IRAC film, 9mil AC woven, and 12mil AC woven.

  • High Tunnel Framing

    • Ground Post Anchors
      1.90″ OD x .060” thick galv. steel tube; 4’ long, driven 3’ into ground; alternative anchoring methods available upon request.
    • Bows
      1.66″ OD x .110” thick galv. steel tube; 4’ spacing between bows; these slide into the ground posts; nearly twice as thick as the .060” tubing most companies use!
    • Rafters
      1.66” OD x .060” galv. steel tube; comes standard on every interior bow for added strength in wind and snow.
    • Purlins
      1.315″ OD x .060” thick galv. steel tube; 1 on peak, 1 per side, 3 total; all full length of structure.
    • Corner Braces
      1.66” OD x .060” galv. steel tube; 5′ long; 1 per corner, 4 total.
    • Peak Braces
      1.66” OD x .060” galv. steel tube; 5′ long; 2 per end, 4 total.

What Makes Our High Tunnel Kits Different?

We exceed industry standards on even our most basic kits to bring our customers peace of mind. Our structures are built to last extreme weather, ensuring a controlled growing environment.
Choose Steady Harvest High Tunnels solution that marries durability with reliability, all designed to support a prosperous harvest season after season.

Steady Harvest High Tunnels

Installation & Delivery

At Steady Harvest, we take pride in offering superior high tunnel solutions that excel in durability and comprehensive warranties, specifically tailored to withstand the challenging weather conditions of Northern Arizona. Our dedication to excellence ensures that whether customers opt for a do-it-yourself kit or prefer our expert installation services, they are guaranteed a robust structure designed for longevity.
  • Statewide Installation Services:
    Offering installation services across Arizona with more flexibility and availability closer to Flagstaff. Options are also available for customers in neighboring states, subject to current availability.
  • Custom Installation Scheduling:
    For customers located further from Flagstaff, the company efficiently plans trips to group installations or DIY deliveries, ensuring a cost-effective and streamlined process.
  • DIY Installation Kits:
    For those looking to save on costs, DIY kits are available, complete with detailed written and video instructions, shop drawings, and engineering calculations for permit requirements.
  • No-Cost Local Pickup:
    Customers can pick up their DIY kits from the company’s shop northwest of Flagstaff at no additional charge.
  • Affordable Local Delivery Options:
    Depending on scheduling, the company offers less expensive delivery options compared to standard freight charges.
  • Nationwide Shipping:
    DIY kits can be shipped throughout the United States via LTL freight, with variable shipping quotes and lead times.
Installation Services
DIY Installation Kits

Warranty Information

Our distinction also lies in our exceptional warranty offers. The plastic film covering of our structures is warrantied for 4 years and the frame itself carries a 10-year warranty. Furthermore, we extend a 1-year installation warranty on upgraded components such as vents, fans, irrigation supplies, heaters, and curtain motors, covering any malfunctions due to installation errors. While we cannot cover inherent defects, we ensure a seamless line of communication with our supply partners, guaranteeing prompt resolution of any issues.
Warranty Information
Our Return Policy

Extend Your Growing Season!

Embark on a path to abundant harvests with us! Reach out now to discover our selection of High Tunnel Greenhouses and innovative growing techniques. Together, we can cultivate a future that’s both lush and fruitful.
Steady Harvest – Your Partner in Growth!
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