Polytunnelsrus is a leading manufacturer and supplier of replacement polytunnel coverings. The evolution of plastic cover technology has shaped permaculture and its usage options. One of the most significant developments is the application of coloured films, manufactured specifically to support and enhance various practices. Coloured plastic covers serve a vital functional purpose, creating ideal growing environments and aiding healthier, more resilient cultivation systems, which is why replacement polytunnel coverings remain a popular choice.
Colour Matters When Choosing Replacement Polytunnel Coverings
Permaculture works with nature, and protected exposure to sunlight is one of the most powerful elements that energises crops. Sunlight delivered through the covering will undergo photosynthesis, stimulating plant growth, aided by temperature stability, and minimising pest and disease issues. Adding colour to polytunnel plastics, which modify the high and low levels of light spectrum reaching the crops within, accommodating different crop needs for light and heat. This gives growers greater control over how they individually create an ideal microclimate, reducing reliance on chemicals, pesticides, or artificial heating.
The reason plastic covers have different colours lies in how they filter and diffuse sunlight in various and distinct ways.
Black Replacement Polytunnel Coverings are used for:
Weed suppression
Light blocking
Ground cover and internal partitioning
Mushroom and light-sensitive crop production
Black film absorbs sunlight but also blocks light from entering, black coverings prevent weed growth, depriving weeds of the direct sunlight needed to begin germination and are used for storage areas. Absorbs heat during the daytime, slowly releasing it at night when temperatures fall, keeping the soil warm.
Green Replacement Polytunnel Coverings:
Moderating light spectrum intensity
Create an ideal microclimate for crops that prefer shade
Green plastic covers help to filter and soften harsh sunlight without completely shading the plants. Reduce plant stress under strong sunlight. Green pigments within the covering block parts of the visible light spectrum, reducing stress, scorching, and overheating. Green replacement polytunnel covering reduce excessive heat build-up by capturing heat and radiating warmth.
White Replacement Polytunnel Coverings:
Highlight diffusion
Temperature stabilisation
Reduces shadowing
Reduces high heat levels while increasing humidity, thus preventing scorching and overheating while offering more consistent illumination. White plastic covers allow light to enter easily and spread light evenly. White or opaque plastic covers are often used in hot, seasonal climates as they help to reduce leggy growth and stress, while enhancing the crop's overall health and uniform growth.
Blue film is used for cultivating vegetative growth in leafy crops by encouraging and stimulating productive internodes. Red-hued film is used on flowering and fruiting crops. Each film shade is designed with UV stabilisers and its light-modifying pigments to ensure performance, durability, and spread consistency.
Replacement Polytunnel Coverings Support Performance and Functionality
Coloured plastics help optimise natural sunlight, without the need for or use of supplementary lighting to aid fertilisation. Adjusted Light spectrums meet the natural requirements that enhance crop growth, matched crops respond well and grow more evenly, having less environmental stress.
Diffused light penetrates the protective canopy, reducing shadowing and encouraging more uniform growth. Valuable to growers in densely planted areas, where multiple species can grow together quite happily
Temperature stability is another advantage that covers bring. Certain film colours and applied pigments to thick plastic covers help provide more stable temperatures as they absorb or reflect specific wavelengths of light.
Why They Produce Plastic Covers with Coloured Polytunnel Films
PolytunnelsRus is a specialist supplier of high-grade covers in the South of England. We supply and fit a wide selection of UV-stabilised polytunnel covers, tailored to all crop needs. Different plants and crops start to flourish under various spectrum conditions; coloured films target their specific growth requirements. Seasonal sunlight levels can be diffused and blocked by pigments and colouring, shielding various crops from heat exhaustion and scorching. In cooler climes, warm-tone plastics are used to help retain heat more efficiently.
Applications for Replacement Polytunnel Coverings
Coloured plastic covers are now used in a wide range of cultivational sectors, from commercial growers to market gardens, community agriculture projects, farm uses, and niche or experimental systems worldwide.