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I use a couple of scaffolding debris nets to protect my plants from birds/ butterflies. Like alot of other people I've seen I've got green nets but they're also available in red, blue, white, black.
Thinking about it - plants use red and blue wavelengths of light to photosynthesise their food, however if you pop something white underneath the netting you can see that the light underneath it has a distinctive green tinge, a wavelength that plants throw away (hence them looking green).
Wouldn't it be better to use either white netting or red/blue netting so that the light underneath is cast into a colour useful to the plant, or at least not absord it. If so which woukd be the best for which plants?
As greenhouse shadin tend to be green, which i assume is to absorb these wavelengths to reduce the intensity on the plants, then couldn't the same question could apply to blowaway greenhouses.
Is the reason that green is used purely aesthetic and because we subconsciously expect them to be green - partly because "it's a GREEN house" and partly because plants are green rather than any scientific/practical reason?
How would you feel if you looked over the allotment site and saw red and blue nets/cloches/polytunnels dotted all over it?
Thinking about it - plants use red and blue wavelengths of light to photosynthesise their food, however if you pop something white underneath the netting you can see that the light underneath it has a distinctive green tinge, a wavelength that plants throw away (hence them looking green).
Wouldn't it be better to use either white netting or red/blue netting so that the light underneath is cast into a colour useful to the plant, or at least not absord it. If so which woukd be the best for which plants?
As greenhouse shadin tend to be green, which i assume is to absorb these wavelengths to reduce the intensity on the plants, then couldn't the same question could apply to blowaway greenhouses.
Is the reason that green is used purely aesthetic and because we subconsciously expect them to be green - partly because "it's a GREEN house" and partly because plants are green rather than any scientific/practical reason?
How would you feel if you looked over the allotment site and saw red and blue nets/cloches/polytunnels dotted all over it?
but I've got green. I don't particularly like the look of the White enviromesh either. I haven't got a clue 
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