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How to Make a Hoophouse on a Raised Bed

garden hoop house

Introduction

Why Build a Hoophouse on a Raised Bed?

Building a hoop house on a raised bed offers numerous advantages for gardeners looking to extend their growing season and protect their plants. Garden hoops for raised beds, made from materials like PVC pipe, can create a protective tunnel that helps keep vegetable plants warm during cold weather by a few degrees and provides garden protection from pests such as cabbage moths.

This DIY hoop house setup allows for the use of various cover materials like plastic covering, greenhouse plastic, garden netting, and shade cloth, creating a versatile environment for growing plants year-round.

By incorporating cold frames, row cover hoops, and greenhouse hoops, gardeners can effectively prevent pests, optimize the greenhouse effect, and ensure their vegetable garden beds remain productive even as the weather cools throughout the year.

Photo of Man Standing Surrounded by Green Leaf Plants

Benefits of Hoophouses for Home Gardeners

Hoophouses offer numerous benefits for home gardeners, particularly when combined with garden hoops for raised beds. They extend the growing season by providing a warm, controlled environment for vegetable plants, protecting them from cold weather and pests like cabbage moths.

Using materials such as PVC pipe, greenhouse plastic, and shade cloth, gardeners can create a DIY hoop house that ensures garden protection and optimizes the greenhouse effect. This setup is especially effective for garden raised beds, allowing gardeners to keep their plants warm and secure year-round, enhancing productivity and plant health in both summer and winter seasons.

A Couple in a Vegetable Garden

Planning Your Hoophouse

Assessing Your Garden Space

When planning your hoop house, assessing your garden space is crucial to ensure the structure fits well and functions effectively. Start by measuring the dimensions of your raised bed or garden beds to determine the appropriate size for your garden hoops and PVC pipe frame.

Consider the placement of your hoop house in relation to sunlight exposure, wind direction, and accessibility for maintenance. Ensuring there's enough space around your garden bed for attaching row covers and other cover materials like greenhouse plastic or shade cloth will help create a secure and efficient protective tunnel.

Additionally, evaluate the soil quality and drainage in the chosen area to support healthy vegetable plants throughout the growing season.

Woman checking plants

Choosing the Right Location

When planning your DIY hoop house for raised beds, selecting the right location is essential for optimal plant growth and protection. Choose a spot that receives ample sunlight throughout the growing season to maximize plant photosynthesis. Ensure the area is well-drained and level to provide stable support for the garden hoops and covering materials like greenhouse plastic or garden netting.

Consider proximity to water sources for irrigation and accessibility for maintenance tasks. By strategically placing your DIY hoop house, you can effectively achieve season extension, protect vegetable plants from cold weather and pests like cabbage moths, and create a favorable environment for year-round gardening

Determining the Size of Your Hoophouse

When determining the size of your hoop house for raised beds, consider the dimensions of your garden beds and the height required for your plants. Measure the length and width of each raised bed to calculate the total coverage needed for the garden hoops and covering materials like greenhouse plastic or garden netting. Ensure the hoop house provides enough space for plants to grow comfortably while allowing room for maintenance and airflow. Depending on the season and your climate, adjust the height of the hoops to accommodate taller plants or provide extra insulation during colder months. By carefully planning the size of your hoop house, you can effectively extend the growing season, protect vegetable plants, and create a conducive environment for year-round gardening.

pvc pipes

Materials Needed

Hoophouse Frame Materials

When assembling materials for your hoop house frame, consider using PVC pipes, metal conduits, or wood based on your garden's needs and climate. PVC pipes are lightweight, affordable, and easy to find at hardware stores, making them ideal for DIY hoop house projects.

Metal conduits offer durability and strength, suitable for larger structures or areas prone to high winds. Wood provides a natural aesthetic and sturdy support, often used for custom-built hoop houses. Whichever material you choose, ensure it can withstand the elements and securely support your chosen covering material such as greenhouse plastic or garden netting to protect vegetable plants and extend the growing season effectively.

Covering Materials

When selecting covering materials for your hoop house, consider options such as polyethylene plastic, shade cloth, or greenhouse film. Polyethylene plastic is versatile and commonly used for its durability and ability to retain warmth, making it ideal for extending the growing season and protecting vegetable plants in colder climates.

Shade cloth provides partial shading to regulate temperature and protect crops from excessive sunlight during hot weather. Greenhouse film offers excellent light transmission and insulation, creating a greenhouse effect that promotes plant growth year-round. Choose the material that best suits your climate and gardening goals to ensure optimal garden protection and plant health within your hoop house for raised beds.

Raised Garden Beds Chili Chives

Additional Supplies

When assembling your hoop house, gather additional supplies such as fasteners, clips, anchor stakes, and necessary tools and safety gear. Fasteners like screws or duct tape are essential for securing PVC pipes or metal conduits together to form the frame.

Use clips to attach polyethylene plastic or greenhouse film securely to the frame, ensuring a tight seal to protect vegetable plants from cold weather and pests like cabbage moths. Anchor stakes are vital for securing the hoop house to the ground, especially in windy conditions, while tools such as a saw or drill facilitate the assembly process.

Always prioritize safety with appropriate gear like gloves and eye protection when handling materials and tools from your local hardware store.

Raised Garden Beds

Garden Hoops for Raised Beds

Contributed by Lauren from Dropstone Farms on Bainbridge Island, WA. [With additions from Peaceful Valley.] We have been meaning to write about this for a while, and today friend and blog-reader Melinda provided the impetus when she emailed to ask how our hoophouses are constructed. I know they are working with a raised bed, so I took some photos to illustrate how we have ours set up! It was warm and sunny today, and when I looked under the hoophouses to see what was up, I was hit with a blast of glasses-fog. So I opened them all up to get some fresh air inside and reduce the moisture levels, since too much moisture leads to mold. As you can see/guess, our raised beds are constructed of 1×12s. Due to paths and other constraints, many of the angles aren’t right angles, so we did our best to support the corners by screwing into sections of 2×4. The hoops of the hoophouses are 1/2- inch PVC pipe (in varying external widths) in 10-foot lengths. Any size of pipe works fine, as long as you are using clips and pipe sized to suit each other. The hoops are held on with some brackety things that are very simple — just one screw on either side. Anecdote time! As we were building the first hoops on these raised beds, last fall, Garth said, I am envisioning a small bracket that holds the hoops and costs 25¢. Then he went to the hardware store, and seemed a bit sad when he returned (though his pockets were full). I asked, Did they not have the brackets you were envisioning? He said, No, they had them. They were 29¢ each. The brackets are easier to apply if you put one on each side, insert the PVC pipe, then have a helper hold it steady while you add the second bracket on each side according to where the PVC hoop wants to rest. The plastic is just a clear-ish plastic dropcloth or tarp from your local hardware store. Ours come from Ace or whichever store we are standing in when we remember we need another one. [Peaceful Valley carries a variety of sizes of more durable greenhouse poly as well.] The plastic is held on the hoops by some very handy hoophouse clips that can be obtained from various sources. [Other companies have them, but only in 20 or 50 packs]; Peaceful Valley has 1/2 inch and other sizes sold individually, with discounts for large amounts. Pro tip! If you put the two hoop-holding brackets far enough apart, you can put one of the plastic clips in between the two, as above. This clip, snugged up against the side of the raised bed, provides extra security, especially when it’s windy. On our non-raised beds, we buy a larger diameter (1 inch?) of PVC and cut it into 12-16 inch sections. We drive these into the ground until about 3-6 inches are sticking out, and place one approximately parallel on the other side of the planting bed. Then we put the 1/2 inch pipe into each of those and bend it over into the other side. The hoops and plastic and clips are the same as above. [Tip from Peaceful Valley: Make your poly plastic last longer when you reduce abrasion between the poly and the hoop with adhesive Felt Cladding Tape]. If it’s windy, you may need rocks on either end of the tarp to secure it. It will let you know by making a lot of commotion and flapping around in the wind. [Peaceful Valley also suggests Cinch Strap and boards to hold down the poly in windy weather].

[For more information about hoop houses, row covers, and homemade greenhouses Peaceful Valley recommends the book by renowned Maine organic farmer Eliot Coleman -- The Winter Harvest Handbook.]

Woman at the Back of Green Plants

Seasonal Considerations

Preparing for Winter

When preparing your hoop house for winter, consider insulation techniques and snow load management to protect your raised bed garden. Insulate with materials like greenhouse plastic or row covers to retain warmth and shield plants from frost during cold weather.

Use PVC hoops or metal conduits securely anchored to withstand snow loads, ensuring the structure remains stable throughout the winter season.

Additionally, strategically position the hoop house to minimize exposure to harsh winds and heavy snow accumulation. By implementing these measures, you can extend the growing season for your vegetable plants and maintain a productive garden under protective cover.

Managing Summer Heat

During the summer months, managing heat within your hoop house for raised beds is crucial for maintaining plant health. Install shade cloth over the hoop house to provide partial shading and regulate temperatures, preventing excessive heat buildup that can stress vegetable plants like tomato plants.

Implement ventilation strategies such as leaving openings at both ends of the hoop house or using duct tape to secure flaps of greenhouse plastic, promoting airflow and reducing humidity levels. These measures help create a conducive environment for plants to thrive during hot weather, supporting a productive growing season under protective cover.

Plants inside hoop house

Planting in Your Hoophouse

Choosing the Right Crops and Seasonal Planting Guide

When planting in your hoop house for raised beds, select crops that thrive in protected environments and suit your local growing season. Opt for heat-loving vegetables like tomatoes, peppers, and cucumbers during warmer months to maximize growth under the greenhouse effect provided by the hoop house.

In colder seasons, choose cold-hardy crops such as lettuce, spinach, and kale that benefit from the added insulation against frost and chilly temperatures. Use row covers or garden netting to further protect plants from pests like cabbage moths and extend the growing season for year-round production.

By aligning your crop selection with seasonal planting guides and utilizing the benefits of a hoop house, you can ensure healthy growth and continuous harvests from your garden beds.

Companion Planting Tips and Pest and Disease Management

When planting in your hoop house for raised beds, utilize companion planting to maximize garden health and productivity. Pairing compatible plants such as tomatoes with basil or marigolds can naturally deter pests like cabbage moths and enhance overall plant growth.

Implement row covers or garden netting to further protect against pests and diseases, ensuring a thriving garden environment. Regularly monitor plants for signs of pests or diseases and promptly address issues with organic pest management methods if needed.

By practicing these strategies within your hoop house, you can foster a balanced ecosystem that supports healthy vegetable plants throughout the growing season.

Man Wearing Black Jacket Checking Plants

Maintenance and Care

Regular Inspections and Repairing Damage

Regular maintenance and inspections are crucial for the upkeep of your hoop house for raised beds. Periodically check the integrity of garden hoops, PVC pipes, or metal conduits to ensure they are securely anchored and free from damage.

Repair any tears or holes in greenhouse plastic or garden netting promptly using duct tape or patching materials from your local hardware store to maintain optimal insulation and protection for vegetable plants like tomato plants. Clear debris from around the hoop house and adjust ventilation as needed to prevent humidity buildup and promote air circulation.

By staying proactive with maintenance tasks throughout the growing season, you can prolong the life of your hoop house and support healthy plant growth year-round.

Cleaning and Sanitizing and Replacing Covering Material

Regular cleaning and sanitizing of your hoop house covering materials is essential for maintaining a healthy environment for your raised bed garden. Remove debris and dirt from greenhouse plastic or garden netting using a soft brush or cloth, and sanitize with a mild soap solution to prevent the buildup of mold or pests like cabbage moths.

Inspect the covering material for signs of wear and tear, and replace damaged sections promptly using materials from your local hardware store such as duct tape or patching kits. By keeping your hoop house clean and replacing worn-out covering materials as needed, you can ensure optimal conditions for vegetable plants throughout the growing season, protecting them from cold weather and promoting healthy growth.

Row of hoop houses

Conclusion

In conclusion, constructing and maintaining a hoop house on raised beds offers substantial benefits for home gardeners seeking to optimize their growing season and protect their plants.

By utilizing materials like PVC pipes, greenhouse plastic, and shade cloth, gardeners can create a versatile environment that supports year-round gardening. Strategic planning, from assessing garden space to selecting the right location and determining the size of the hoop house, is crucial for maximizing plant growth and ensuring efficient use of resources.

Additionally, implementing seasonal considerations such as insulation techniques for winter and heat management strategies for summer further enhances the hoop house's effectiveness. With proper maintenance, including regular inspections, cleaning, and timely repairs, gardeners can sustain a productive and healthy garden under protective cover, enjoying continuous harvests and plant health throughout the year.

Person checking plants

FAQs: How to Make Garden Hoops for Raised Beds

  • What is a hoophouse on a raised bed?

    • A hoophouse on a raised bed is a structure made from garden hoops for raised beds (such as PVC pipes) that forms a protective tunnel over a raised garden bed. It utilizes materials like greenhouse plastic or shade cloth to extend the growing season, protect plants from frost and cold weather, and prevent pests such as squash bugs and cabbage moths.

  • What materials are needed to build a hoophouse on a raised bed?

    • To build a hoophouse on a raised bed, you'll need garden hoops for raised beds (PVC pipes), greenhouse plastic or shade cloth for covering, clamps or fasteners (like screws or duct tape), and tools such as a saw or drill. Additional materials may include scrap wood for support and clips to secure the covering material. Depending on your site, you might also need materials for low tunnels or cover.

  • How does a hoophouse benefit plants in raised garden beds?

    • A hoophouse over raised garden beds, utilizing greenhouse hoops and grow tunnel techniques, provides a controlled environment that keeps plants warm during colder seasons like late fall and early spring. It protects seedlings and crops from pests, adverse weather conditions, and frost. This setup optimizes the greenhouse effect, extending the harvest season and enhancing growth and productivity of vegetables such as spinach, carrots, and salad greens.

  • Can I build a hoophouse on any raised garden bed?

    • Yes, you can construct a hoophouse on any raised garden bed, adapting the length and shape of the structure to fit the dimensions of your bed. It's important to select materials that match the size and seasonal needs of your plants to ensure effective garden protection and optimal growing conditions. Ensure there’s enough access to the bed for maintenance and harvest tasks.

  • How do I maintain and care for a hoophouse on a raised garden bed?

    • Regular maintenance of a hoophouse on raised garden beds includes inspecting the structure for damage, cleaning the covering material to prevent mold, weeds, or pests, and replacing worn-out parts as needed. Use clamps and other fasteners to secure the covering material properly. Proper care ensures the longevity of the hoop houses and provides a conducive environment for healthy plant growth throughout the seasons.

  • How can a hoophouse help with season extension for my crops?

    • A hoophouse helps with season extension by creating a microclimate that keeps the temperature around your plants several degrees warmer than the outside temperature. This is particularly useful in extending the harvest season for vegetables and salad greens well into the fall and early spring.

  • Can a hoophouse be used for low tunnels?

    • Yes, hoop houses can be adapted for use as low tunnels, which are lower, more temporary structures often used for season extension. This setup is ideal for seedlings and can be an inexpensive way to protect plants and enhance growth.

  • What should I consider when choosing the site for my hoophouse?

    • When choosing the site for your hoop house, consider sunlight exposure, wind direction, and proximity to water sources. Ensure the site is well-drained and level to provide stable support for the garden hoops for raised beds and covering materials. Proper site selection will enhance the effectiveness of your hoophouse in extending the growing season and protecting your plants.

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9 comments

Very similar to what we do! However, I cut a few slits in the top for ventilation – it definitely warms up in there more than you might want, so a few of these do the trick. We keep a staple gun nearby to keep the plastic down on the ends. The stapling also really helps if you have evil chickens who like to cause mayhem in newly planted raised beds :) PS – the “brackety things” are called pipe clamps :)

eemia

John, if you are going to leave the rowcover on, the light transmittance is greatly reduced with the heavier weight cloth. The greenhouse poly allows full light into the plants and yes has to be pulled up to water but better for the light. That is really the reason to use (for a winter-long low tunnel) the greenhouse poly.

Suzanne

I’m wondering why you don’t use “row cover” instead of clear poly ? It breaths, thus little heat buildup in sun. It also allows water penetration from rainfall. It too can be held on by the same clips described in your article and weighted by bricks or stones on the ends. Just a question ?

John

PVC is specified by outer diameter and minimum wall thickness. Contrary to another comment, 1/2" Sch. 40 PVT will NOT fit inside 3/4" Sch. 40 PVC. The former has an OD of 0.840", and the latter has a maximum ID of 0.824". One solution is to upsize your outer sleeve to 1". An alternative solution, much better in my experience, is to use 1/2" CPVC (not PVC) which will indeed fit inside 3/4" Sch. 40 PVC. Being thinner, it is more flexible than its PVC counterpart of the same nominal size, and easier to bend into the sizes typically required for raised garden beds.

Stephen

Parker, you can use them in the summer, just make sure you have a way to vent it, if it gets too hot. I know with my low tunnels over my raised beds, even in the winter I have to roll back the greenhouse plastic so the plants won’t cook (on sunny days).

suzanne@groworganic.com

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