Greenhouses for vegetable gardens


Functions and location

Greenhouses for vegetable gardens are preparations or structures used in agriculture to protect and / or cultivate sheltered and confined crops, isolated from the outside and from adverse climatic conditions, improving the development environment during the crop cycle, exploiting and optimizing the transmission of direct solar radiation . In addition to repairing plants from excessive temperatures, light intensity and extreme atmospheric agents (frost, frost, hail, rain, wind), greenhouses for vegetable gardens represent a strategic solution on any type of soil to develop ordinary protected crops of vegetables at any time of the year, regardless of the climate and seasonality of the harvest, or in the period of late winter - early spring up to transplanting in the open field at the most appropriate. In fact, by conditioning the internal air conditioning and the seasonal period of normal harvesting, in these protective artifacts it is also possible to carry out agricultural practices of anticipated (early) or delayed (late) horticultural production (forced or semi-forced crops). Greenhouse vegetables are grown in the soil (directly or soilless, in containers at the bottom or on a pallet), while in hydroponics or hydroponics, in an inert and porous material (pumice, peat, perlite, etc.) with nutrient supply through micro-irrigation or sub-irrigation; the substrate is replaced by a liquid also nutritional in the floating culture (Floating system), closed cycle in the Nutrient Film Technique (NFT); in aeroponics, the plants supported by perforated plastic elements with their roots suspended in the dark are sprayed with mineral fertilizer solutions.

Determinant for the efficiency of greenhouses is their position in such a way that the exposure exploits the maximum of direct sunlight - a relevant factor in particular in the coldest periods - and, therefore, preferably at a distance from the shadow that extends from various impediments (buildings, trees, hedges, etc.). Due to the greenhouse effect, visible sunlight (short wave radiation) penetrates through the transparent coatings of the structure, infrared rays (long wave) are absorbed and remain trapped inside, thus keeping the ambient air heated and the increase in temperature within the protection of the roof and walls. This primary heating mechanism is interrupted by opening a window which, by ceasing the function of barrier to the air flow, automatically assumes that of a cooling system for the internal temperature. Starting in the morning, the sun's rays are absorbed by the cover and by the plants grown inside the greenhouse, maximizing plant development, so that the best position for an independent greenhouse is to be east-west and south-west or south in the leaning one. . Cold greenhouses exploit only the sun's rays, while temperate greenhouses are kept at a constant temperature between 10 ° -14 ° C and warm ones between 16 ° -20 ° C at night.


Types and materials

In addition to the space available in the garden and the consideration of the yield of the harvest, certain requirements (stability, mechanical resistance, type of service, durability, functions, etc.) of the numerous types of extraordinary constructions of greenhouses marketed with standardized structure or in kit version do-it-yourself, intended for a vegetable garden with a family or professional production orientation, require necessary preventive evaluations that are essential to any design and purchase.

Tunnel mini-greenhouses (width 2-4.5 m., Height about 2 m.) With a semicircular supporting structure mostly made of metal and plastic film cover represent functional seasonal protections for rows of plants from the beginning of cultivation or from the end. winter to the following autumn.

Bolted roofing for the vegetable garden as a solution of easy assembly and quick disassembly are the mobile greenhouses with a semi-circular or elliptical vault of different heights, with a steel arch frame (in two separate parts hooked together) surmounted by a cloth cover in flexible polyethylene or polyvinyl chloride (PVC) with UV ray filter or by a double PE sheet with low pressure air chamber to ensure greater insulation.

It takes advantage of a limited space, it is easy to access and with close availability of supplies (electricity, water, heat), the wall greenhouse leaning against an external wall of your home, which increases its stability, reduces heat losses and heating costs.

Freestanding viable structures let in more sunlight, but remain exposed to the wind and subject to heat loss. With single span, coupled or twinned modular double span without partition or multiple with battery, there are different construction characteristics: tunnel greenhouses with single arch (or mansard) continuous to the ground or with vertical side walls and curved or gothic roof, with roofing, heads and side walls in plastic film or sheets, or traditional models with one or more elements with flat roof pitches or vines (horizontal beam roof with small pitches) in glass or plastic film or sheet.

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Greenhouses for vegetable gardens: Structure and systems

In addition to a foundation for permanent anchoring to the ground (fixed greenhouses) or temporary (mobile greenhouses), removable and reusable for the same purpose, the essential structural elements of the greenhouses for vegetable gardens consist of internal flooring, load-bearing or self-supporting structure with mounted and fixed cover, ventilation openings (wall and / or roof), access door (people, vehicles), various equipment, components and systems. A series of technological systems are designed to control the internal conditions of air conditioning both passive direct (natural lighting, openings for air exchange, etc.), and active (temperature, relative humidity, concentration of carbon dioxide, ventilation, light, etc.) and / or any other needs (irrigation and / or fertigation, disinfection, handling, automatisms, etc.).

Ordinary garden greenhouses rest on a masonry foundation (concrete, platform with self-locking tiles for outdoor use), on a curb on the perimeter of the ground or on a mobile support fixed to the ground. The load-bearing structure is mostly with an unalterable tubular aluminum or galvanized steel frame (anti-rust, corrosion-resistant) since the iron is less robust and the wood is easy to break, modify, require maintenance, etc. Colorless, high-transparency and long-lasting cover and walls are made of glass sheets and glossy or translucent fiberglass, single or double-walled, with high resilience and mechanical resistance, fixed to the load-bearing structure with joints (joints, joint covers, gaskets, bolts in aluminum, steel, rubber), or in rigid or semi-rigid plastic, smooth or corrugated resin, fiberglass, polyester, alveolar polycarbonate (PC) protected against UV rays (insulating, resistant, light), or in flexible polyethylene (PE) or ethyl vinyl acetate (EVA) films, also superimposed (greater mechanical and thermal resistance), polyvinyl chloride (PVC) also anti-drip, as well as special thermal PE with low linear density (PEBD). The glass is absolutely transparent, with thermal insulation, insensitive to solar radiation and combustion, unalterable by moisture and acids, but more fragile, heavy and expensive, while plastics generally deteriorate and have a shorter duration.

Depending on the size of the standardized greenhouse, the access door (hinged, sliding or tilting for agricultural machinery) is usually inserted in the header, single or double, with plastic or hermetic closure, or heads and sides that can be opened with cranks . The larger structures mount roof windows with manual or automatic opening, one or more lateral, single or double, gravity, vasistas, plastic or automated film winding and various accessories (workbench, cultivation benches in metal or masonry, walkways, shelves, etc.). Adequate openings to the outside are used to make air changes with a ventilating effect, to cool the temperature overheated by the heat of the sun, to decrease the humidity of the air to avoid the formation of internal condensation (ideal condition for the proliferation of fungal diseases that they would propagate quickly indoors) during the winter and keep the level of anhydride constant inside the greenhouse. A natural change of air can take place through special slits on the side of the roof, exhaust fans and motorized intake grilles, fans installed in parallel or in series at diagonally opposite corners and along the sides. By keeping the air forcibly circulating during the winter, the heated greenhouses remain at a uniform internal temperature, otherwise the heat flow would rise upwards, leaving the plants on the ground cold.

The heat requirement of a greenhouse - depending on the temperature required by the cultivated plants, the location and the type of construction - may require a heating system (electricity, gas, etc.) to maintain the desired degree of heat. In summer, greenhouse crops must instead be protected from heat and the intensity of light with natural and / or forced ventilation air exchange, an evaporative cooling system and external shading (roll-up roof screens in wood or aluminum, plastic material nets, etc.), interiors (plastic sheets, reeds, etc.) or specific temporary dyes.

In high-tech greenhouses, a series of structures, equipment and control systems with automated management regulate and program the additional artificial lighting system (fluorescent, mercury, sodium vapor, metal halide lamps, etc.) service and emergency, heating temperatures - via radiators, hot air generators, stoves (gas, diesel, electricity), alternative sources, etc. - and cooling (windows, shading, sliding tarpaulins), air conditioning (heat pump, evaporation stimulated by Cooling System fans, etc.), carbonation (enrichment of CO2 enhancing the chlorophyll photosynthesis process), relative humidity (irrigation by sprinkling, Fog System micro-misting), and handling (sliding and / or removable benches, etc.).

The installation of photovoltaic systems integrated into the greenhouse roofing is developing in the garden-nursery in a protected environment to make the structure independent in terms of energy without compromising crop productivity. The silicon photovoltaic panels on the south-facing pitches of fixed greenhouses (even pre-existing ones, without tampering with the supporting structure), moreover, efficiently replace the blackout screens. In this business sector, management, plants and control require, in fact, a considerable energy expenditure for production and post-harvest, but state, regional or national contributions and incentives are destined for agricultural development.



COMPANY

R.D. by ramondetto Elio & Ivan snc

has been dealing with iron carpentry for over 50 years and the GREENHOUSES are a product that we have always studied, created and perfected over the years, up to the current level of quality.
Nothing is left to chance, every constructive choice and every material have been scrupulously tested in order to guarantee a product of high build quality, highly versatile is scalable over time.
Our greenhouses, in fact, can be expanded at any time (because they are made up of modular elements of 2 meters) and each polycarbonate sheet can be replaced individually.
The experience in iron working also allows us to offer customized structures to be inserted inside the greenhouses for those who need them.

Why choose us

Our greenhouses have unique characteristics, are robust and versatile.

  • Quality materials
  • Totally openable
  • Expandable at any time
  • Shaded from the outside or from the inside
  • Easy to assemble


Greenhouses and accessories

3-tier greenhouse with PVC tarpaulin 69 cm x 49 cm x 125 cm

Clematis garden greenhouse 155 cm x 155 cm x 205 cm

Planet 5000 greenhouse polycarbonate 6 mm

Ida 1300 wall greenhouse polycarbonate 4 mm 1.3 m²

Wall greenhouse Ida 3300 polycarbonate 4 mm

Wall greenhouse Ida 5200 polycarbonate 4 mm emerald

Bellows tunnel kit greenhouse

4-tier greenhouse with PVC tarpaulin 69 cm x 49 cm x 157 cm

House greenhouse Narciso 185 x 240 x 205 cm

Raised flowerbed with Gaia cover 3X 180 x 53 x 51 cm

Raised bed with vanilla Levana cover

Terrace greenhouse with PE sheet 101 cm x 52 cm x 150 cm

Wall greenhouse Ida 7800 polycarbonate 6 mm emerald

Pop-Up Citrus greenhouse Ø90 x 150 cm

Serra Athena 10200 tempered glass - anthracite polycarbonate

Comet 5000 greenhouse polycarbonate 4 mm

Green Leaf covering film 2 m high when cut

Wall greenhouse Ida 900 polycarbonate 4 mm raw aluminum

Meridian 2 greenhouse 11500 polycarbonate 6 mm emerald

Tunnel greenhouse for vegetable garden with PVC sheet 200 cm x 300 cm x 180 cm

Spring medium greenhouse for tunnel vegetable garden

Green wall greenhouse Ida 900 4 mm alveolar polycarbonate

Greenhouse Triton 7500 polycarbonate 6 mm

Foundation frame Ida 3300 raw aluminum

Greenhouse Aphrodite 7800 polycarbonate 10 mm white

Meridian greenhouse 2 9900 6 mm anthracite alveolar polycarbonate

Foundation frame Ida 1300 aluminum

Wall greenhouse Ida 3300 4 mm green alveolar polycarbonate

Lobelia wall greenhouse with hood

Square house greenhouse with PVC sheet 140 cm x 140 cm x 195 cm

Planet 3800 greenhouse in 6 mm emerald polycarbonate sheets

Foundation frame in Ida 900 raw aluminum steel

Greenhouse Aphrodite 7800 polycarbonate 10 mm

Serra Ida 6500 polycarbonate 4 mm anthracite

Planet 2500 greenhouse in anthracite 6 mm alveolar polycarbonate sheets

Raised flowerbed with Gaia cover 2X 39 x 120 x 100 cm

Triton 7500 greenhouse polycarbonate 4 mm

Planet 2500 greenhouse polycarbonate 6 mm

Triton 5000 greenhouse polycarbonate 4 mm

Wall greenhouse Ida 7800 polycarbonate 6 mm 7.8 m²

Triton 5000 greenhouse polycarbonate 6 mm 5 m²

Comet 2500 greenhouse polycarbonate 4 mm

Meridian 2 greenhouse 8300 alveolar polycarbonate 6 mm anthracite

Planet 6200 greenhouse in 3 mm tempered glass

Planet 6200 greenhouse polycarbonate 6 mm

Wall greenhouse Ida 7800 polycarbonate 4 mm emerald

Wall greenhouse Ida 6500 polycarbonate 6 mm emerald

Triton 2500 greenhouse polycarbonate 6 mm

Greenhouse Ida 6500 polycarbonate 6 mm anthracite

Triton 3800 greenhouse polycarbonate 6 mm

Serra Ida 7800 polycarbonate 6 mm anthracite

Meridian greenhouse 2 6700 4 mm alveolar polycarbonate anthracite

Meridian 2 greenhouse 8300 4 mm alveolar polycarbonate anthracite

Spring mini greenhouse for tunnel vegetable garden

Triton 3800 greenhouse polycarbonate 4 mm

Triton 6200 greenhouse polycarbonate 6 mm

Meridian greenhouse 2 6700 6 mm anthracite alveolar polycarbonate

Triton 6200 greenhouse polycarbonate 4 mm

Wall greenhouse Ida 6500 polycarbonate 4 mm emerald

Triton 2500 greenhouse polycarbonate 4 mm dark green

Meridian 2 greenhouse 11500 polycarbonate 4 mm emerald

Greenhouse Triton 5000 polycarbonate 6 mm dark green

Raised flowerbed with aquamarine Levana cover

Serra Athena 8600 tempered glass - anthracite polycarbonate

Serra Ida 7800 polycarbonate 4 mm anthracite

Wall greenhouse Ida 6500 polycarbonate 6 mm 6.5 m²

Comet 6200 greenhouse polycarbonate 4 mm

Triton 2500 greenhouse polycarbonate 4 mm

Greenhouse Triton 2500 polycarbonate 6 mm dark green

Greenhouse Triton 5000 polycarbonate 4 mm dark green

The online catalog does not represent the entirety of the assortment available in OBI stores. The prices and availability shown represent the current price and availability of the OBI shop selected under "You are in the shop of". If the item can only be ordered online, the indicated price applies only to online orders.
All prices are expressed in Euros and are inclusive of VAT.

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Production of garden greenhouses

Ten years of experience in production of garden greenhouses, a passion cultivated over time that allows us today to offer a personalized journey into the world of spring lovers. We are absolutely not talking about greenhouses for cultivation alone, but about real jewels capable of increasing your home's value and giving you a new space, an interlude between home and garden, capable of enclosing comfort and relaxation.


A wall greenhouse, for example, it will be a simple solution capable of creating an area in which to cultivate your passions together with plants, a real small garden sheltered from bad weather and atmospheric agents, a regulated environment in which it is possible to associate spring colors with a reading or just relaxing. A'orangery instead, it could be the ideal solution for those looking for something more evident, broad, in which to entertain guests and above all take care of citrus fruits and succulents, making them grow together with their passion. Orangeries are also called "winter gardens" for the ability to grow plants in excellent climatic conditions that would require different climates. They are an exclusive environment in which to take care of your passion or even have a pleasant chat with guests while serving excellent tea. We can also provide a perimeter wall to create even more a real connection to the house (or a separation) and the idea of ​​a comfortable living environment.


Choose your style: whatever type of greenhouse you are looking for, whether it is a veranda or a winter garden, connect it to your indoor environment in a coherent way, decide for a modern, minimalist, standard or Victorian design. The profiles we produce can be used for any type of structure and style, combining aesthetic needs with structural needs.

Rely on ours services, we will make your wishes come true with structures "keys in hand", starting from an interview in which to analyze your needs, our accurate survey and consequent study and design in detail, the installation and implementation by a qualified and professional team and to follow the guarantee of a punctual and accurate after-sales service capable to follow you during and after the entire purchase process.

Some of our achievements: GARDEN GREENHOUSES



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