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High Tunnel Greenhouses

BYSteady Harvest

Premium Season Extension Structures. We empower growers of all kinds to maximize their yields,  extend their growing seasons, and build a better food system along the way.

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The Most Durable Season Extenders

Longer seasons, bigger smiles

Steady Harvest is about innovation and quality. All of our structures are designed to provide an ideal environment for your plants. Protect your garden from harsh weather conditions, pests, and other challenges, and gain control of temperature, irrigation, and ventilation.

Whether you’re a small-scale farmer, a seasoned gardener, or a commercial grower, our High Tunnel Greenhouses are tailored to suit your needs and goals.
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“These guys are hard working and provide quality, durable, and sustainable products. I would recommend them to anyone who wants to make their gardening dreams come true!” 

– Beth (Flagstaff, AZ)

A sample of our work.

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Why Choose Steady Harvest?

Grow more, pretty much forever.

  • Season Extension

    Our structures offer an adjustable microclimate, stretching your growing season. Plant earlier and harvest later, enjoying a vibrant garden year-round. They’re not just season extenders, they’re opportunity expanders!

  • Increased Yield

    This microclimate will transform growing conditions, boosting plant health and crop yields. More than just increased harvests, they provide protection for thriving, robust plants, leading to a more fruitful, joyful yield. Lose less to harsh weather and pests.

  • Premium Components

    We only use premium quality, USA-made coverings from Americover and Solexx. We source all our galvanized steel tubing from LP Tube, a privately-held company right here in Arizona. We minimize the amount of wood and plastic in the frames of our structures for ultimate dudrability.

  • Sustainability

    We only use the highest quality materials to ensure a long product life, minimizing the overall amount of steel and plastics needed to produce quality greenhouses. They allow you to conserve resources, and contribute to a more robust community food system.

  • Customizable

    Each of our structures are a foundation for a grower to build upon. Whether you choose to install accessories right away or years down the road, our frames will support you all along the way, pun intended.

  • Low Maintenance

    With a long-lasting frame made completely of galvanized steel tubing, maintenance costs are almost strictly limited to replacing coverings when they wear out – something most folks can easily do themselves! We use common hardware and components to ensure easy fixes. 

  • Warrantied to Perform

    We offer a 10-year structural warranty on DIY kits and installations, a 1-year craftsmanship guarantee to fix anything at all on installations, and we match all manufacturers’ warranties on the coverings we provide. SolaScrim for 4 years. Solexx for 10 years.

    Meet the Founders

    Nick Zachary
    & Finn Bingham

    We are Finn and Nick, two friends who joined forces to solve the problems that we, like all growers, experience in Northern Arizona: harsh climatic swings, short growing seasons, and a lack of cost-effective, durable, all-weather season extension structures. We’re building upon decades of research indicating why high tunnel greenhouses are one of the most cost-effective season extension techniques out there. We’re on a mission to boil down high tunnel technology into residential greenhouses and raised bed coverings, allowing everyone to grow in unlikely places.

    How We Got Started
    Have Questions

    Steady Harvest Products

    Big or small.
    We’ve got you covered.

    Steady Harvest season extension structures stand as a beacon of innovation and superior quality in the realm of residential greenhouses. They are meticulously designed to empower you with more control over critical growing conditions, including temperature, humidity, and ventilation, ensuring an optimal environment for plant growth and health. Whether you’re a first-time gardener aiming to extend your growing season, a passionate grower seeking to have an edge at the market, or a commercial grower looking to maximize production efficiency, our structures are crafted to align with your specific agricultural aspirations and requirements, making them an invaluable asset in your pursuit of agricultural excellence.

    • 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
    “These high tunnels are incredibly well-designed and impressively well-built. Nick and Finn are a pleasure to work with! I’ve seen a lot of high tunnels. Nothing I’ve seen compares with the quality of these structures. We opted to upgrade to Solexx for the cover and ends for the longevity of the product. Worth every penny. My husband and I are hard to impress, but we’re both over-the-moon happy with our purchase!” – Ida Rose (Flagstaff, AZ)

    Frequently Asked Questions About Our

    Growing Solutions

    What makes Steady Harvest greenhouses suitable for extreme weather?

    Our structures are built with Northern Arizona’s harsh weather in mind. Made with galvanized steel tubing and premium coverings, we ensure that even our most basic kits have everything necessary to hold up for years in high winds, heavy snow, and hail. All structures include a 10-year warranty on the frame, and we match the manufacturer’s warranty on the covering (4-10 years).

    Are Steady Harvest structures better for small gardens or large farms?

    We have a wide variety of season extension structures to suit every grower’s needs! The MiniTunnel is great for a gardener growing in a small raised bed; our Greenhouses are great for residential growers; and our High Tunnels are designed for production farms looking to seriously increase yields. 

    How does a Steady Harvest greenhouse help achieve stable crop production?

    Any kind of season extension structure can create a more suitable microclimate for your plants by shielding them from the elements. Our structures achieve this and more because they are designed to be durable, customizable, and easy to maintain. We want to give you a solid foundation to build upon to make your plants happy!

    Do you offer any of your structures as DIY kits?

    Yes, we offer all of our structures as DIY kits! We provide you with detailed video instructions that makes building your structure a breeze. We still cover DIY kits with our 10-year frame warranty and match the manufacturer’s warranty for your covering. 

    Do Steady Harvest greenhouses require a lot of maintenance?

    We have painstakingly designed all of our structures to be easy to use and easy to maintain. All components are chosen for their high durability, long lifespan, and availability. We give growers a foundation to build upon and customize to best suit their needs.

    How does Steady Harvest contribute to reducing long-term growing costs?

    Our season extension structures help growers create the ideal microclimate for their plants, increasing efficiency and yields. Growers can precisely control temperature, irrigation, nutrient dispersal, among other things. All this contributes to greater crop health, higher yields, and time (and MONEY) savings!

    Feeling Handy?

    Professional Installation and DIY Kits

    At Steady Harvest, we currently offer installation services across the state of Arizona. Clients who desire our installation services are kindly requested to indicate this preference on the contact form while placing their orders. We’ll be in touch about all the details that go into building your new structure! We are pleased to offer additional services such as tilling, building of raised beds, and installation of new soil/mixing in of compost to existing soil, though these will incur extra charges.

    If you’re pretty handy and have some elbow grease to spare, we also offer all of our structures as DIY kits with clear video instructions. Our DIY kits can be shipped nationwide, so anyone, anywhere can take advantage of our complete line of products.

    *Contact us to inquire about installation in another state*
    Installation Services
    Questions? Contact Us

    Steady Harvest

    News & Insights

    Ready to Start Growing?

    Let’s start your journey towards a steady harvest! Contact us today to explore our range of growing solutions. Let’s grow together for a greener, healthier future.

    Steady Harvest – Build. Grow. That’s it.

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