A greenhouse composed of quality components is your best bet for producing quality plants. Check out the choices here—just a few among oh, so many.

“Tough” greenhouse

After a harsh winter, many growers understand the subtle differences in greenhouses. There are a lot of claims in the market, but a strong greenhouse structure can only be designed with the appropriate amount of steel and structural engineering. When Woodburn Nursery in Oregon wanted an unheated A-frame, they turned to Rough Brothers to build 45-foot and 60-foot greenhouses. Recent photographs show the Rough Brothers A-frame SQ after a 14-inch snowfall. The Rough Brothers SQ showed no signs of bending, buckling or broken welds.

What makes a Rough Brothers “Tough” greenhouse?

Steel: Heavy-gauge 50ksi square tube steel for its superior strength over round tubing; hot dip galvanizing after fabrication so 100 percent of the interior and exterior surfaces have a metallurgical zinc coating to prevent member weakening.

Design: Truss is assembled with high tensile strength bolts and plates; this eliminates the concerns of cracked, broken or overheated brittle welds, which gradually weaken a greenhouse structure during seasonal expansion and loads.

Engineering: Transferring the roof snow and wind loads to the 4-foot by 4-foot square posts can only be done through steel structural members. An engineered A-frame truss needs to be integrated directly integrated into the steel post and never attached to weaker aluminum castings.

For more information: www.roughbros.com


Diffusing film

With the cost of fuel, fertilizer and other materials continually on the rise, growers must always be looking for ways to increase yields and remain viable in the market. Those who use greenhouses can gain a competitive advantage by specifying F-Clean® films (membranes) from AGC Chemicals Americas Inc. for their structures. F-Clean ETFE films provide more than 93 percent light transmittance and the highest UV transmission—more than glass, polyethylene or polycarbonate—helping to speed crop growth, improve quality and increase yield. F-Clean membranes are self-extinguishing and available in clear, diffused and UV-blocking versions.The ETFE fluoropolymer chemistry produces long lasting performance, low reflection and refraction rates,very low surface energy, anti-drip coating and diffused film option.

For more information: www.agcchem.com


Greenhouse covering panels

Solexx greenhouse covering is white for a reason: It produces an even, diffuse light proven to accelerate plant growth by 30 percent and allow light to glow evenly, reaching into every corner of the greenhouse. More light for more photosynthesis means more robust growth. Independent lab tests prove Solexx twinwall, flexible, insulated greenhouse material insulates better than even 8 mm polycarbonate to keep heating costs low. Panels are strong and shatterproof to protect against wind, snow and hail, and they won’t fade or turn yellow over time.

Solexx panels score and cut easily, and they’re flexible to wrap around peaks and corners for a watertight seal. Precut panels and custom-length rolls up to 900 feet long are available in two thicknesses: 3.5 mm for nearly all applications, and 5 mm for high altitude and heavy snow areas.

Panels can be installed horizontally or vertically, resulting in less waste.

For more information: www.solexx.com


Spinner irrigation

The S10 Spinner from Nelson Irrigation evenly distributes a wide range of flow as gentle as rain. With its high-flow capacity, high uniformity and greater radius, fewer S10 Spinners are required than traditionally needed in similar applications. Space the S10 from 16 by 16to 26 by 26 feet, depending the size and configuration of your greenhouse; closer spacing will normally deliver the best uniformity.

Three plate options are available for high trajectory,low trajectory or flat trajectory performance. The black option produces a high trajectory in upright or inverse position; the green option produces low trajectory in upright or inverted position; and the gray option produces flat trajectory in the inverted position.

Ten color-coded nozzle sizes are available, handling a range from 0.8 to 5 gallons per minute; 182 to 1,136 liters per hour.

For more information: www.nelsonirrigation.com


Extra strong greenhouse

Built to withstand the harsh and unpredictable weather conditions of the Northeast, the Nor’Easter from Rimol Greenhouses is constructed with a truss support system that doubles the strength of every bow. It’s said to be the strongest freestanding greenhouse available. Thirty- and 34-foot widths are standard. Bows are made from 1.90-inch, 13-gage galvanized steel tubing for strength and durability, and can be set on 4-foot or 5-foot bow spacing. A truss assembly with every bow results in unmatched strength.

Purlins connect to the bows using a cross connector, preventing unnecessary drilling into the bow; there are five purlins per 30-foot structure and seven purlins per 34-foot structure. The truss support system allows for additional purlins to be mounted to accommodate hanging baskets in production and retail settings.

Wind-bracing kits are included with all units.

For more information: www.rimolgreenhouses.com


High tunnels

Haygrove Tunnels offer a safe way to protect plants during that transition from heated greenhouse to outdoor planting. The structures can be fully vented-all the way to the apex at 9 or 10 feet. This provides for exceptional air movement and means that tender plants can harden off more effectively than when they’re confined to enclosed structures. Plus, Haygrove Tunnels can be covered with polythene in the autumn, winter and spring, then deskinned and quickly covered with shade cloth for the hotter summer months.

The Haygrove Solo Gothic is designed to withstand heavy snowfall-ideal for regions with snow risk. It also has the added advantage of providing up to 80 percent more air volume than a standard, single-bay structure.

For more information: www.haygrove.com