6m x 3m (19ft 8in x 9ft 10in) Premium Polytunnel Galvanised Frame by New Leaf™. Smit Nursery Ltd. A polytunnel can open up a world of possibility for your garden. Polytunnel for bedding production. Polytunnel 19Mm 4M X 2M Waterproof and windproof this polytunnel is the perfect solution to protect your crops, giving them the best start in life. 4,190 likes · 3 talking about this. Amazon. All our Polytunnels are concreted in place. It’s possible to grow pot outdoors, indoors or in a greenhouse or high tunnel. Make the perfect choice to suit your commercial needs with Northern Polytunnels' excellent range of high. 45m. I compare my wooden greenhouse (201. All the polytunnel covers that we supply have a 5 year guarantee against UV degradation and. ADD TO BASKET. . a. Step 1: STEP 1 - Fixing the Aluminium End Arches. £169. In essence, these tunnels. Greenhouse Garden Polytunnel Grow Tunnel Vegetable Allotment 0. 44m) Wide. A polytunnel is an elongated semi-circular or square shaped tunnel. The green plastic on the Ebay tunnels lasted for about a year, since I left it on. The only exception is that they seem to be fine for green salad crops. Victoria amazonica (giant Amazon waterlilies) in a large greenhouse at the Saint Petersburg Botanical Garden. This garden polytunnel greenhouse from Outsunny comes with an integrated tunnel and is composed of durable PE cloth over a high-quality steel pipe frame. 5m (50) Total ratings 50. 27/01/2023 . 4. 3m Long x 33mm OD x 1. They are like a greenhouse in terms of functionality. Brace bars when installed are approximately 1. 5 cm. 5 to 5 pounds of marketable fruit per plant over the season. Here’s what you’ll need for one greenhouse measuring 3½ by 8 meters: • 8 Steel Star Pickets (fence posts) – $7-10 – Try to find the taller posts but anything over 120cm will do just fine. . The green colour light helps any greenhouses with thick top canopies so that the leaves staying in the lower part still receive sufficient green light on their own to participate in photosynthesis. 99 New. 30ft (9. 99 postage. BRAND NEW 14FT X 54FT POLYTUNNEL KIT - HEAVY DUTY PROFESSIONAL GREENHOUSE - ND. Because they have been immersed in a bath of molten zinc, the tubes, bolts and nuts service life is increased greatly. 4. Look, I’ll fess up if you will too. 6 FT Large Walk-in Greenhouse for Outdoors, Heavy Duty High Tunnel Green House w/ PE Cover 2 Zipper Screen Doors. I put the case forward for a polytunnel and how you. Lightweight, Portable, Compact Mini Plastic Greenhouse: This mini cold frame / grow tent is the perfect compact size for small gardens, patios, or balconies. Greenhouse lighting should be viewed as just as important as being able to control temperature, ventilation and humidity. Outsunny 138"x39"x32" Transparent PVC Mini Tunnel Greenhouse Garden Green Grow Shed Portable Plant Flower Warm House Steel Frame Zipped. Clear any stones from the ground and unroll the cover, sliding it over the hoops so it sits evenly over the frame. Green bean growing periods in tunnel. Polytunnel ventilation is vital to a thriving polytunnel garden. Benefits of Using High Tunnels. Divulapitiya East, Western. Covered Greenhouse from Swing N Cocoa. When it gets colder, the condensation in the tunnel freezes and ice crystals develop on the inside of the plastic and in the soil. 99. 1 x 13mm pipe to garden hose connection. Only use clear plastic if you use greenhouse for germinating seeds and growing starters for transplanting outdoors. Polytunnels on the other hand provide outstanding value for money. They’re also much easier to move and to reassemble compared to a greenhouse. Green house price in Sri Lanka or Poly Tunnel Price in Sri Lanka is very high. Site your greenhouse east to west. Polytunnels come in all shapes and sizes, AND Costs! Today we are building a polytunnel, while erecting a budget tunnel I’ll let you know if I think they are. 5m x 2m (8ft 2in x 6ft 7in) Premium Polytunnel Galvanised Frame by New Leaf™. 45m. Polytunnels provide a cost-effective alternative to a greenhouse. 98 - $19. Forest Garden Mini Greenhouse - 144 x 120. 5mm Wall Thickness Z35 High Tensile Galvanised Tube As used to manufacture all our Polytunnel kits. Or fastest delivery Wed, 16 Aug. The outside of the structure will not need such careful treatment. Buy as big and good quality as you can get (typically 12-15 m long) 3. Sun and shade: A diffused polythene sheeting on a polytunnel helps to prevent heat spots, but you may have to paint. Use scissors to cut off the bottom of each bottle. After you have driven all of your foundation tubes into the ground, check them with a spirit level to make sure they are level. £40. 45m x 3m x 0. The interior heats up because incoming solar radiation from the sun warms plants, soil, and other things inside the building faster than heat can escape the structure. 8 1/2 inch PVC pipe, 10 feet long. The use of Base Rails is a very popular option for covering a polytunnel. Acquire diverse wholesale polytunnel greenhouse models here. 2 X Poly PE Grow Tunnel Cloche Garden Plant Veg Protection Polythene 1. Tomato seedlings are going quick and as space presents itself I am planting for seed collection. £49. 00. The FeelGoodUK Polytunnel comes with a full, heavy duty 25mm steel metal frame and stronger welded joints all through. Constructed using powder coated steel. If cost is one of the main factors affecting your decision, polytunnels are far less expensive to install than greenhouses. Add to wishlist. It’s not just fruits and vegetables that you can grow, either. 99 with 24 percent savings -24% $ 219. Cover individual plants with horticultural fleece (or upcycle old clothing or textiles for the purpose). Buy Greenhouse online in Ireland for Low Cost. Information. Outsunny Mini Greenhouse, Small Polytunnel Green House with Zipped Doors, Steel Frame for Garden Backyard, 295 x 100 x 80cm, Green. Green polythene– allows up to 65 % of light to reach the tunnel. It’s best to go for one that’s at least 6ft (1. Pierce the tennis balls with a hole on either eased and tie each end of the cord securely through each tennis ball. 6x2 m, 26. 8mm thick steel frame 140g transparent PE material with green checker or. We offer our kit in various lengths ranging from 20 to 100 feet because we know that space and budget are primary concerns no matter the size or volume of your farming operations. In this video we show you how to build a polytunnel from Premier Polytunnels in the UK. A high tunnel is an unheated structure that is typically used to extend the growing season for crops. Some poor soul is going to very disappointed today. #plasticrepair #poly. They are a cost-effective addition to your garden, protecting your vegetable crops from the weather and from pests. Mercia Shiplap Greenhouse Combi Shed - 10 x 6ft. Constructed using powder coated steel frames covered with a waterproof PE protector, this polytunnel is durable and easy to construct. For example, Delite Garden polytunnel greenhouse frames are made of hot-dip galvanized tubes and hardware. Also suitable as a “brown” additive in your compost bin to balance wet “green” materials such as fruit and veg. Polytunnel Greenhouse 4x8x2 m, 32 m², Transparent £525. 20cm of 1:1 compost and soil. 99 £ 26 . They seem to be excellent for bringing small plants on in the early. Polythene / Netting Fixing Systems. £22. For more stability, 4 included wind ropes should be tightened and fixed on the ground by 4 ground stakes Large Greenhouse Overall Dimension: 2. 9. 99. Stock photos, 360° images, vectors and videosSome things I tried in the polytunnel were because I had one or two plants left over, after planting the majority outside. 99. 1) Each arch built up with an 'L' shaped piece at the bottom of each leg. Polytunnels provide these cut and come again crops the perfect growing environment. Protecting crops from pests and adverse weather, our polytunnels optimise climate conditions for your specific environment and needs. 8m) wide so you have enough room to move around; 8ft (2. Pale plant leaves can be caused by overwatering, lack of nutrients, and limited sunlight which all reduce the chlorophyll density. This damage can occur due to heavy adverse weather or just general wear. Polytunnels coverings are typically made out of plastic polythene with an added UV. 00 to £2,879. With a mini polytunnel protecting your crops, you will also find that you add at least 6 to 8 weeks of growing time to your garden. Keep the plastic taut when fitting. Learn how to easily splice polyethylene plastic sheets to replace or repair cover on high tunnel, polytunnel, hoop house, or greenhouse. . It mostly absorbs the spectrum of red light and it’s UV stable. 64 /box (5) Model# HYWSCWP-868FZB5WDV0. It’s strong and sturdy, with a powder-coated steel frame and a PE cover with double-stitched seams. Celeriac (size of croquet balls) Cabbage and cauliflower (never had such clean veg before) Chiogga beetroot. Wind and humidity, however, together with the lack of sunshine, exacerbate the sensation of cold. These crops have varieties that can tolerate the heat, so you can still grow them in your polytunnel year-round. . Garden Point 2,5M(L) x 2M(W) x 2M(H) Green Polytunnel Greenhouse with Galvanised 19mm Diameter Steel Frame Poly. Buy one tube of PVC glue. Keep in mind, the longer the polytunnel, the more it will need to be braced for additional support. 5” thick PVC each 20 feet long for the two horizontal lengths. Your body frame must measure 8- inches in height and 76 inches. 3 x 90 degree 13mm corner connections. I recommend two 6' long walls facing two 8' long walls. . Several people have tried them on our Allotment site & the winter always destroys them. Greenhouses, polytunnels (typically walk-in structures used with a wide range of crops, potentially over large areas; sometimes called ‘high tunnels’) and cloches (plastic coverings of less than a metre high. 1. Biodegradable polymers are materials that can work for a limited time before degrading into readily discarded products through a regulated procedure 7. Other veggies grown in the polytunnel include cucumbers, apple and lemon cucumber, courgette, carrot, parsnip, hot and sweet peppers, eggplant, pumpkin, squash. Get your green fingers out, anywhere - whether it's on a balcony or in a designated allotment patch, thanks to this compact greenhouse from Outsunny. A polytunnel can open up a world of possibility for your garden. The crops you intend to grow – Since some crops require diffused light, a green polytunnel may be the best option, while those that are heat-sensitive may do well in a white polytunnel. Heavy Duty Direct From Manufacturer Full Kit (No Doors) $1,942. 6Ft (1. Green covers tend to scatter light more evenly throughout the growing area, which can help prevent hot spots and promote more uniform growth. 3m Long x 33mm OD Z35 High Tensile Galvanised Tube. 99Symbols of hastily acquired wealth abound. 2) The arches were temporarily sat in their final positions to mark ground areas were we needed to dig the holes for each leg. £157. 00 Get it 30 Nov – 9 DecThe Classic tunnels feature a rounded, quonset design that is wind resistant and is also our fastest greenhouse to build with just a 2 – 3 hour assembly time. The idea is that you are at one end. 15m) Wide From £3,326. Polythene comes in several colors for a polytunnel but green, white, and black are the most popular. 4. Place a strip along each hoop before fixing the cover in place. It resembles the conditions of the forest floor, and it’s appropriate for plants that grow on such habitats. colour of polytunnel cover: green; metal frame made from galvanised anti-rust steel; 6 arch frames; To Consider: our expert’s top pick on our list of best polytunnels for an allotment or garden on a budget; excellent customer reviews; easy to assemble; various sizes available; durable design – UV protection, 25mm strong steel poles (0. 00. 83m) Wide. 99. 4m) wide will enable you to put staging (shelves) on both sides. Plan your sizing. Add to Cart Compare. An outdoor marijuana greenhouse or. Semi-circular in design, polytunnels come in a variety of shapes and sizes. Heat retention: Greenhouses often require more heat during the winter months, whereas a polytunnel covered with a Thermal polythene and without the drafts of a greenhouse, can help if you’re considering over-wintering crops. These cheap little plastic reinforced wendy houses are waste of money. The zinnias are the only flowers still showing life. 32m) Wide From £2,187. 90. Frame Only 6m x 3m Poly Tunnel Polytunnel Greenhouse Green House Polly Tunnel. Polytunnel covers are available in clear, diffused white, green and other colours, each colour type offers a different micro-climate to be introduced into the tunnel, the most popular, being clear, opaque (diffused) white, green, and a mix of green and white. 5cm tubes were too thin for my exposed site. For this purpose you need to choose clear covers like glass, single-wall polycarbonate and acrylic plastic. A polytunnel will enable you to to bring a slice of the Mediterranean home, increasing the variety of crops you can grow. Re: Polytunnel in winter. Polytunnel greenhouses are a fantastic alternative to the far more expensive greenhouses made of aluminium and polycarbonate or glass. Ventilation is essental for 2 reasons: To keep airflow going so that the tunnel doesn't get too damp in winter or too hot in summer. . 4 m², Transparent £429. Location – If your location experiences a lot of heat, a white polytunnel may be suitable to keep the temperature cooler. There are many reasons why you should have an undercover growing space, be it a greenhouse or polytunnel. Outsunny Metal Frame 14. 95m)24ft (7. She has filled the rest of the garden with a polytunnel, a vegetable patch, a herb garden, a wildlife pond, woodland areas. 30/m $165; Poly plastic 7. Horizontal brace bars for 12ft wide tunnel approx $72 per bay plus freight. 4. Adjust this depth based on how large your want your polytunnel to be. The stones will absorb and retain heat from the sun and slowly release it through the night the night, therefore keeping. Some plants can die, while others will wilt or their photosynthesis will be affected. Green polythene– allows up to 65 % of light to reach the tunnel. These heaters run generally 30W to 90W ish and yes, if you seal in your greenhouse or polytunnel good, you stand a decent chance of knocking up the thermostat by a few degrees – I have tried tested and proven this – on a morning that is otherwise minus outside, and it is above 0 in the polytunnel even without direct sunlight to assist. 1. Growing sustainably undercover shouldn’t cost a fortune, and our Allotment Polytunnel offers a high-quality kit. Use small cloches (plastic drinks bottles, old milk containers, etc. You want 3. A polytunnel is a polyethylene tunnel elongated and stretched out in a long caterpillar, semi-circular shape. This item: Garden Point 2,5M(L) x 2M(W) x 2M(H) Green Polytunnel Greenhouse with Galvanised 19mm Diameter Steel Frame Poly Tunnel £79. Having our longer greenhouses 16′ wide allows for four 30″ wide beds with walkways. 4. Grow a variety of flowers, plants and vegetables in this 3x2 metre polytunnel by Garden Grow. I'd say go for it for the price and as long as its not to exposed you should get a good life out of it. 95 £79. Greenhouse Garden Polytunnel Grow Tunnel Vegetable Allotment 0. Polytunnels: Extend Your Growing Season. It features 4x retractable windows that allow light in and a reinforced steel frame for additional stability. A greenhouse is a structure that allows people to regulate climatic. Direct light encourages germinating seeds to sprout and develop into strong seedlings ready for transplanting outdoors. Netted windows with PE covers to help you control the temperature inside. Polytunnels come in all shapes and sizes, AND Costs! Today we are building a polytunnel, while erecting a budget tunnel I’ll let you know if I think they are. 00. However, larger polytunnels can be expensive and as such, are more commonly used for commercial purposes, as the profit from selling. Welcome to Polyeco Greenhouses! We understand that choosing the right greenhouse or polytunnel for your needs can be overwhelming, with so many options on the market. Hanwella Town, Western. But we can build a low cost green house by ourselves. If you don’t you’ll risk breaking or putting holes in your structure before you even begin. I recommend two 6' long walls facing two 8' long walls. For more stability, 4 included wind ropes should be tightened and fixed on the ground by 4 ground stakes Large Greenhouse Overall Dimension: 2. ) in height and often much larger. 20 full jet spray bits (50 piece contractor pack at Bunnings - you'll find a use for the. Free 100 orkid and extra net. The greenhouse is 2. 2m (7 feet 2 inches) high, making it suitable to grow tall plants. £9999. Polytunnel Greenhouse vs. Contact 01282 811250 today!Polytunnels can be used to provide a higher temperature and/or humidity than which is available in the environment but can also protect crops from intense heat, bright sunlight, wind, hailstones, and cold waves. 00. 00 Get it 30 Nov – 9 DecThe Classic tunnels feature a rounded, quonset design that is wind resistant and is also our fastest greenhouse to build with just a 2 – 3 hour assembly time. The 55′ GrowHoop allows for industry standard 50′ of growing beds with 5′ of extra space to be used at the ends of the greenhouse for access. Solar tunnels are usually at least 3 feet (1 m. 52 per bay plus freight. BCGT Large Outdoor Polytunnel Greenhouse with Heavy Duty Steel Frame,. Product code. Palram - Canopia Harmony Silver Greenhouse - 6 x 6ft. Ventilation. Shop Online - Greenhouses for sale in Ireland - Polycarbonate Tunnels - Polytunnels - Vegetable Seeds and Greenhouse Accessories - At My Greenhouse. 99 postage. Cover individual plants with horticultural fleece (or upcycle old clothing or textiles for the purpose). How to install a polytunnel. However, beware of cheap green polytunnels, as the thickness of the frame. More buying choices. To further put it into context, the Hall Hunter Partnership owned the 470-acre Tuesley Farm in Surrey. Palram - Canopia Harmony Silver Greenhouse - 6 x 4ft. x 6 ft. x 8 ft. However, there’s still some amount of variety in shapes; they can also be shaped like domes or tents. How to build a polytunnel. Polythene Covers, Netting & PVC / Canopy Covers. Direct light encourages germinating seeds to sprout and develop into strong seedlings ready for transplanting outdoors. First Tunnels range of polytunnel covers are durable and manufactured with the best materials to ensure they are durable and long lasting. This green 47% shade net is ideal to be used on a polytunnel with or without a polythene cover in place. New and used Greenhouses for sale in Nochchiyagama, Sri Lanka on Facebook Marketplace. 4m) wide will enable you to put staging (shelves) on both sides. I'm lucky. Low tunnels are temporary structures that are approximately 4 feet tall and 3 to 6 feet wide. 99. . The hoop house range, includes outdoor structures that can be up to 20 meters long, by 5 meters wide. 8 x 6. It will also help it to heat up more quickly after cold nights. Next clean the sides using a long handled soft brush and hose. You may need to long-handled brush to reach. Description. “We use the high tunnels to help schedule cut flower harvesting earlier and later, when prices are best,” says Pete Smit, who co-owns the nursery with his brother Gerard. H Portable Plant Greenhouse with Door & 8 Roll-up Windows, Green. A cold frame is the traditional way of supplementing a greenhouse. SALE H joining profiles click system 2m long for 4mm and 10mm polycarbonate. 7' or 7. The Polytunnel Handbook. Heavy Duty Direct From Manufacturer Full Kit (No Doors) $1,942. 10. 4 out of 5 stars 38. . Therefore the best location for a greenhouse will probably be around 4 metres to the west and 1 metre to the north of an existing building, fencing or hedgerow, away from footballs and other flying objects, yet close enough to the home, a water supply and possibly electricity. Add to basket. We go out to the green house the morning after the storm and find it crushed . . The autumn foliage here in the northeast is the most beautiful in the. 71. Advantages of Polytunnel Greenhouses. Green & White Polythene (200 Micron) Prices listed above are per meter. One of the effective shading techniques is to use shade paints. However, adding shades to your polytunnel is tricky because plants need sunlight to grow. 6 x 9. Don't forget to have the long side (12') facing the sun's path. The exception here is if you only have a small space. The farm is situated in Green Belt land inside an area designated as of great landscape value. 4. Learn how to easily splice polyethylene plastic sheets to replace or repair cover on high tunnel, polytunnel, hoop house, or greenhouse. Polytunnels are a tool used by farmers, large scale vegetable producers, and also individuals who wish to grow their own. ආරක්ෂිත ගෘහයේ. This is a step-by-step guide to aid with the assembly of the New Leaf Polytunnels3m x 2m Walk-In Polytunnel Greenhouse with Steel Frame Grow plants, flowers, fruits and vegetables all year round. Cloches, cold frames and polytunnels are like mini unheated greenhouses that keep out the cold and wind and help retain heat around the plant. £865. Of course, there are exceptions to every rule. Polytunnel Greenhouse is an easy to setup structure with quick and easy installation. Hi Dee, cheaper is not always better, I can only repeat, what I recommend at my polytunnel courses: 1. The zinnias are the only flowers still showing life. Outsunny Steel Large 14. It lets in loads of light but diffuses the real mid day glare. The farm is situated in Green Belt land inside an area designated as of great landscape value. . The dimensions of our greenhouse were purposefully planned. Galvanizing gives the elements resistance to corrosion. £39. It is most often constructed using steel and is covered in polythene. A polytunnel can cost USD 50-4,000, depending on the size and materials you choose for construction. Our customizable 10 ft. An industrial strength tube ideal for adding extra supports or creating structures within a polytunnel. The two horizontal widths will need 2 pieces of 1. Look, I’ll fess up if you will too. Polytunnel Kit For Sale In Australia. Do polytunnels protect from frost? A polytunnel acts in a similar way as a greenhouse and provides a warm home for low crops during cold weather spells. McGregor Garden Mini Balcony Greenhouse. Meet the POLYCRUB // my greenhouse-polytunnel hybrid - YouTube50m roll of 50mm green line poly pipe $3. Read more 48 productsPoly-Tunnel Greenhouse by My Garden Product code: P889364 Features Long & spacious greenhouse Sturdy steel frame Included guy ropes & ground pegs Information This. . Best polytunnel overall: BIRCHTREE 6M (L) x 3M (W) x 2M (H) Polytunnel Greenhouse Pollytunnel. Ventilation is essental for 2 reasons: To keep airflow going so that the tunnel doesn't get too damp in winter or too hot in summer. A green layer on top of soil is often caused by algae, which thrives in warm, wet, bright environments with moist, humid air. I grow plenty of other crops alongside these other groups, but the rotation focuses. Allow crops such as tomatoes, cucumbers, melons and aubergines to crop more successfully. Light Intensity Vs. . One day it’s cold, overcast and damp,. Birchtree Polytunnel (6 x 3 x 2 m) 2. Walk-in Tunnel Greenhouse 15 ft. £. Frame Only 6m x 3m Poly Tunnel Polytunnel Greenhouse Green House Polly Tunnel. Cloches, cold frames and polytunnels are like mini unheated greenhouses that keep out the cold and wind and help retain heat around the plant. Plan your sizing. 6 x 6. Tomatoes, garlic, zucchini, broccoli… are ones of the most popular crops can be cultivated in a s mall polytunnel. . By capturing and retaining solar radiation, these tunnels are an awesome tool to have. Outsunny Small Polytunnel Greenhouse Green Grow House Steel Frame for Garden Backyard with Zipper Doors 295x100x80 cm Green Description: Grow plants, vegetables, fruit and flowers safely all year round with this long tunnel greenhouse from Outsunny. Grow a variety of flowers, plants and vegetables in this 3x2 metre polytunnel by Garden Grow. They can fit within many gardens and other growing spaces while still offering a good amount of space for growing food. Polytunnel Polythene Greenhouse Cover - Thermal Anti Drip - 7. They’re durable, low-maintenance, and designed for high loads and optimum production. Wash and remove the labels from the bottles (not necessary, but it ends up looking nicer). ie we offer top quality polycarbonate polytunnel and greenhouse sales, delivery , installation and maintenance services as well as best customer service possible whilst delivering excellent guidance. “We pre-plant applied most of our nitrogen (N. . Greenhouse Polytunnel. Garden Hoop Grow Tunnel Frame Kit - Small. 95. Polytunnel Greenhouses Extend your growing season and keep plants protected from harsh weather conditions such as frost, wind and rain with a polytunnel greenhouse. It contains the same heavy-duty steel framework as our popular Hobby Plus - Easy-Build Polytunnel, but without the added. 4) The front supports and door frame were then screwed into place. If you have yet to purchase a polytunnel and think you may experience extreme heat in the summer, you may also. Steps for constructing basic polytunnel greenhouse: This should give you a basic enough structure to start working in a greenhouse. If you only intend to grow summer crops, aligning the ridge north. Inside the hothouse at 27 October 2021. Only use clear plastic if you use greenhouse for germinating seeds and growing starters for transplanting outdoors. Generally a cold weather vegetable they actually thrived in the polytunnel this year – something. The factors polytunnel areas in winter under use, consultancy, demand for high quality produce and regional and seasonal production contribute equally with 10% to the achievement of the overall goal. 45m x 3m x 0. But once you've decided to invest in a polytunnel, there are many. get the best ventilation possible going, by having the widest doors ever possible. A polytunnel (also known as a polyhouse, hoop greenhouse or hoophouse, grow tunnel or high tunnel) is a tunnel typically made from steel and covered in polyethylene, usually semi-circular, square or elongated in shape. Duwal’s Polytunnel For Growing Hot Dragon Chilli 4M Gable Height with 1000 sqft Polytunnel build on Athurugiriya, Minuwangoda for Growing Hot Dragon Chilli. Net Polytunnel Covers From £23. This polytunnel greenhouse structure allows for excellent ventilation. Greenhouse and Tunnel Supplies. Only 3 left. This makes transparent covers a much better option. You can make this school science project and lea. Also known as hoophouses, polytunnels are extended, polythene covered frames that resemble green houses but are relatively simpler. Polytunnels are expensive to heat over winter and don't give enough protection to be used for overwintering tender plants. Greenhouse Assembly Instructions For Greenfingers’ Items LS6316D&LS6317D: size 4ft x 6ft (1. 45L x 2W x 2H (m); Assembly required NOTE: Not suitable for bad weather conditionsDon't know how many you would need but keep in mind that they kill everything. Shop Online - Greenhouses for sale in Ireland - Polycarbonate Tunnels - Polytunnels - Vegetable Seeds and Greenhouse Accessories - At My Greenhouse. In many ways, growing marijuana in a greenhouse or high tunnel offers the best option. Note that green polytunnel covers do not let enough light permeate through the tunnel This makes transparent covers a much better option. Condensation issues in polytunnels can be resolved by installing Thermal Anti-Fog covers, which effectively reduce moisture levels. Elizabeth Waddington is a writer, permaculture designer and green living consultant.