Why do I need a Morrifield Polythene Tunnelhouse?

If you are looking for the best quality kitset NZ made Tunnelhouse on the NZ market, then look no further, a Morrifield greenhouse is for you. We pride ourselves in our products, service and advice and we only use top quality materials, supporting locally made products where possible.

Being a small family run business, our staff that take pride in what they manufacture. We know you will love our products! Having a sustainable product that lasts many years and is great for the environment is important to us. Our products are fully recyclable.

With the one piece fabricated cover it will be the simplest Tunnelhouse installation you will find in NZ and with easy instructions and supporting installation video.

What Are The Advantages of a Polythene Tunnelhouse?

Growing fruit and vegetables in a Morrifield Polythene Tunnelhouse offers numerous benefits. Our NZ-made tunnelhouses are crafted with high-quality materials, proven to withstand New Zealand’s harsh weather conditions since 1980. With a simple, one-piece fabricated cover and easy-to-follow instructions, installation is a breeze. Our tunnelhouses extend the growing season, promoting faster growth and providing a steady supply of fresh produce year-round. This means significant cost savings and health benefits for you and your family.

Our affordable tunnelhouses suit all budgets, enabling year-round growing and protecting crops from extreme weather and pests. With a range of ventilation options and a durable polythene material, backed by a 4-year UV warranty and 7-10+ year lifespan, you can garden with confidence. We guarantee our DIY assembly tunnel house is the easiest on the market. At Morrifield, we’re proud to offer exceptional products and comprehensive backup sales and service, including expert gardening advice. Click here to view the Morrifield garden blog with many helpful greenhouse growing tips and advice.

The Benefits of Growing Undercover in a Morrifield Tunnelhouse

• Extended Growing Season: Enjoy a longer growing season with our polythene tunnelhouses, trapping heat and creating a greenhouse effect. Plant earlier and harvest longer, regardless of colder climates.
• Weather Protection: Shield your crops from New Zealand’s extreme weather conditions, including heavy rain, hail, strong winds and frost. Our polythene tunnels ensure your plants remain safe and secure.
• Pest and Disease Control: Maintain a pest-free and disease-free environment with our enclosed polythene tunnels. Keep insects and fungal diseases at bay, while ensuring optimal ventilation.
• Increased Crop Yield: Maximise your harvests with optimal growing conditions inside our polythene tunnels. Faster growth, earlier harvests and reduced crop losses guarantee a higher overall yield.
• Improved Crop Quality: Savour tastier, more nutritious produce with precise control over temperature, humidity and light. Our polythene tunnels ensure ideal conditions for exceptional crop quality.
• Water Conservation: Reduce irrigation costs and conserve water with our polythene tunnels. The plastic cover retains moisture in the soil, minimising the need for frequent watering.
• Versatile Growing Options: Choose from various tunnel sizes to suit your crops and growing techniques. Accommodate raised beds, vertical systems and innovative methods to maximise space and productivity.
• Optimised Ventilation: Ensure healthy plant growth with proper ventilation. Our polythene tunnels allow for controlled airflow, crucial for greenhouse growing success.

Morrifield Tunnelhouses come standard with a Polythene door and roof vent, with larger models featuring additional ventilation options to ensure optimal airflow. Our kitsets can be customised with windows and back doors to suit your needs, reducing the risk of mildew, mould and fungal diseases. Effective ventilation is crucial, especially during summer months, to maintain a healthy growing environment. For existing tunnelhouse owners, our accessories range offers upgrade options to enhance ventilation. Please get in touch if you require any parts or accessories for your tunnelhouse.

Shading for Temperature Regulation

In some climates and in the heat of Summer shading your tunnelhouse will regulate the temperature to reduce stress on some plants. Our shade covers offer 30% shade, and this is suitable for growing fruit and vegetables. Too much shade can stop photosynthesis and reduce growing capabilities. If you are growing natives or flowers these may require more percentage of shade, depending on what you are growing.

Regular Maintenance for Peak Performance

Annual cleaning of your tunnelhouse ensures optimal light transmission, removing dust, plant residues and mould/mildew. Watch our helpful cleaning video for guidance.

Converting to a Crop Protection Tunnelhouse

If you’re looking to convert your Polythene Tunnelhouse to a Crop Protection Tunnelhouse, it’s possible with additional parts. However, keep in mind that Polythene Tunnelhouses offer greater versatility for year-round growing, particularly during colder winter months.

Nationwide Delivery

Our tunnelhouses are freighted nationwide via Mainfreight. You can collect from any depot with a trailer (approx. 8ft x 4ft or larger) or opt for direct-to-site delivery, subject to location accessibility. Please provide your full address during the checkout process and we will contact you to confirm the final shipping costs for your specific order. *Please note: For home delivery please ensure good property access, as deliveries are made on large trucks. Depot Collect is a better solution for sites with restricted access.

*Important, please note:

Our Tunnel houses have been tried & tested in NZ’s harsh weather conditions since 1980. It is very important to provide good wind shelter/protection especially from the North Westerly wind which in some cases is gale force, or your prevailing wind. Having good wind protection and shelter will ensure longevity in most cases, except for major weather events, and including cyclones and tornadoes of which we have no control over.

We cannot guarantee the tunnelhouse and parts against weather events due to the nature of the product and placement or location unfortunately.

Our product is guaranteed for 10 years for the framework and parts, against any manufacturing fault or defect deemed by us that is not satisfactory, excluding the cover which has a 4-year warranty.