The Benefits, Crops, and Management of 30 x 96 High Tunnels

An Introduction to 30 x 96 High Tunnels

A high tunnel, also known as a hoop house, is a greenhouse-like structure used by farmers to extend the growing season for fruits and vegetables. High tunnels allow farmers to grow produce for longer periods during the year by modifying the climate inside the structure.

30 x 96 refers to the dimensions (in feet) of a common size of high tunnel. A 30 x 96 high tunnel has a length of 96 feet and a width of 30 feet, resulting in a total area of 2,880 square feet. This size tunnel is popular among small to medium-scale farmers looking to increase yields and extend seasons.

Benefits of Using a 30 x 96 High Tunnel

There are many benefits to using a high tunnel that is 30 feet wide by 96 feet long:

• Increased yields - A high tunnel protects crops from some pests, diseases, and weather extremes. This results in higher yields compared to unprotected field production.
• Extended growing season - High tunnels allow farmers to plant earlier in spring and continue harvesting later into fall, extending the production season by weeks or months.
• Weather protection - Crops in a high tunnel are protected from excessive rain, wind, hail, and snow. This prevents crop losses.
• More consistent quality - The modified growing conditions inside a high tunnel allow for more consistent size, shape, color, and quality of produce.
• Water conservation - Less water is needed for irrigation in a high tunnel due to the enclosed environment.
• Versatility - A 30 x 96 high tunnel has enough space for a wide variety of fruits, vegetables, and flowers.

The 30 x 96 size, in particular, offers a good balance of space efficiency and cost. The elongated shape and ample area allow flexibility in bed layouts and crop choices.

Crops That Thrive in a 30 x 96 High Tunnel

Many types of produce can be grown successfully in a high tunnel. Some of the top crops for a 30 x 96 high tunnel include:

• Tomatoes - One of the most popular high tunnel crops. Require vertical support.
• Peppers - Grow well in protected setting. Can be trellised.
• Cucumbers - Benefit from reduced disease pressure.
• Lettuce - High tunnels allow for reliable, year-round production.
• Spinach - Bolts more slowly in cooler high tunnel temperatures.
• Radishes - Mild weather reduces spiciness.
• Carrots - Consistently good germination and growth.
• Beets - Protection from weather fluctuations improves quality.
• Herbs - Many varieties thrive in the high tunnel microclimate.
• Cut Flowers - Tunnel extends bloom period for many popular flowers.

The list above highlights some top options, but a wide assortment of fruits, vegetables, and herbs can flourish in a high tunnel environment.

Constructing a 30 x 96 High Tunnel

Several steps are involved in constructing a 30 x 96 high tunnel:

1. Site preparation - Choose a sunny, well-drained site and remove debris. Level the ground if needed.
2. Install foundation - Dig holes for foundation posts, set posts in holes, and backfill with concrete for stability.
3. Erect hoop frames - Bend hoops over foundation posts and secure using provided fasteners.
4. Attach purlins - Purlins are horizontal framing pipes that connect the hoops across the width of the tunnel.
5. Add poly film - Pull the greenhouse poly film over the frame and secure tightly with wiggle wire.
6. Install doors - Cut flaps in poly and install roll-up and/or swing doors for access.
7. Add ventilation - Install poly roll-up sides, roof vents, and/or fans for ventilation.
8. Complete interior - Add raised beds, irrigation system, trellising, etc. inside the tunnel.

Following manufacturer's instructions carefully is key. Some sites may require additional bracing. Professional installation is recommended for larger high tunnels like the 30 x 96 size.

Managing the Environment Inside a 30 x 96 High Tunnel

One of the main advantages of a high tunnel is the ability to modify the growing environment. Key elements to manage include:

• Temperature - Vents, fans, heaters and shade cloth help regulate temperature.
• Humidity - Proper ventilation and air circulation prevents excessive moisture.
• Irrigation - Drip irrigation combined with proper watering schedules optimizes moisture levels.
• Light - Supplemental lighting can be used to extend day length or increase light intensity.
• Pests - Screening, traps, and preventive controls reduce insect pressures.
• Diseases - Proper plant spacing, hygiene, and air flow limits fungal and bacterial diseases.

A combination of technology like fans and heaters coupled with vigilant monitoring and management is required to maximize high tunnel productivity.

Comparing 30 x 96 High Tunnels to Other Sizes

High tunnel frames come in many lengths and widths. Some key points when comparing sizes:

• Wider tunnels provide more growing space but are more expensive.
• Longer tunnels allow greater crop variety and succession planting.
• Larger tunnels can require supplemental heating to maintain ideal temperatures.
• Smaller tunnels need less structural bracing and can be managed ventilated manually.
• The 30 x 96 size offers a balanced growing space that's affordable to heat and ventilate.

Growers should consider factors like budget, crop selection, climate, and labor availability when choosing an appropriate high tunnel size.

Obtaining a 30 x 96 High Tunnel

For growers interested in acquiring a 30 x 96 high tunnel, there are several options:

Purchase With NRCS Grant Funding

The USDA Natural Resources Conservation Service (NRCS) provides grants to farmers for various conservation projects including high tunnels. These programs cover a major portion of high tunnel construction costs in most cases.APPLICATION OVERVIEW

How To Apply:

1. Contact your local NRCS office to discuss program options andapplication requirements.
2. Submit application prior to cutoff deadline (varies by state).
3. NRCS reviews application and farm eligibility.
4. If approved, NRCS provides payment to vendor to construct high tunnel.
5. Farmer pays remaining percentage of cost.

Tips for Success:

• Start the application process early to allow ample time.
• Understand ranking criteria used to prioritize projects.
• Emphasize benefits to soil health, water conservation, and agricultural operations.
• Be flexible on construction timeline - funding availability varies.

Purchase Directly from High Tunnel Vendor

Many equipment manufacturers and greenhouse suppliers sell high tunnel kits for growers to construct themselves. This allows customization but requires full upfront investment by the farmer.

Key Steps When Purchasing Direct:

1. Determine desired size, features, and any accessories.
2. Research reputable high tunnel vendors.
3. Compare multiple vendor quotes.
4. Select vendor and place order.
5. Arrange delivery timing and site logistics.
6. Schedule construction resources or prepare for DIY assembly.

Order timing is flexible but many vendors have production cutoffs over winter. Leaving ample assembly time is key.

Work With Local Construction Company

Contracting a local agricultural or greenhouse construction company is another option. The company will design and build a custom high tunnel to the grower's specifications.

Benefits of Hiring a Construction Firm:

• Handles entire process from permit to completion.
• Brings extensive experience constructing high tunnels and greenhouses.
• Can provide turnkey service or work with grower's installation crew.
• Knows local climate considerations and building codes.

Get multiple bids and check references before selecting a contractor. Be sure to verify required permits and site preparations.

Maximizing the Value of a 30 x 96 High Tunnel

To get the most return from investing in a 30 x 96 high tunnel, growers should:

• Choose crops that justify the extended season and protected environment.
• Use proper planting schedules and succession planting.
• Implement careful environmental monitoring and control.
• Maintain vigilant sanitation, pest control, and crop care.
• Market effectively to sell the increased production.

With proper construction, management, and marketing, a 30 x 96 high tunnel can pay for itself within a few seasons of increased yields and extend the growing ability of a small farm significantly.

FAQs

What crops grow best in a 30 x 96 high tunnel?

Some of the top crops for a 30 x 96 high tunnel include tomatoes, peppers, cucumbers, lettuce, spinach, radishes, carrots, beets, herbs, and cut flowers. The ample space allows for a diverse assortment of produce.

How long does it take to construct a 30 x 96 high tunnel?

It typically takes 2-3 days to fully construct a 30 x 96 high tunnel. More time may be required for site preparation beforehand. Professional installation is recommended due to the large size.

What is the cost of a 30 x 96 high tunnel?

The cost of a 30 x 96 high tunnel kit alone is around $2,500 - $5,000 depending on the manufacturer. With site prep, accessories, and labor, the total cost is typically $8,000 - $12,000. NRCS grants can cover a large portion of costs.

What type of foundation is needed for a 30 x 96 high tunnel?

A typical foundation involves digging holes for foundation posts, setting the posts in concrete, and bracing the foundation posts with diagonal ground posts. Concrete piers are another option but more expensive.

How long will a 30 x 96 high tunnel last?

With proper maintenance and repair of the polyethylene cover and structural components, a high tunnel can last 15-20 years. The cover typically needs replacing every 5-7 years depending on climate and use.