In the thread on the damage extreme heat in South Australia had inflicted on Jamus' and Trevor's plants, Alessandra wrote:
Actually, I always shade the greenhouses with black or very dark green shade cloth. I lose light of course - but the difference in terms of temperature is incredible!You can see the original thread on the severe heat damage by clicking
here. But it's prompted this separate discussion of different sorts of shading.
We use dark green netting (on glass here in UK, and also in an outdoor area with lily species) for heat reduction. Have you, Alessandra, or anyone else, tried reflective netting - aluminet? The dark green netting certainly does get warm and must radiate some of that warmth back into the glasshouse. People say that using reflective netting instead can lower temperature at least as much, while allowing more light in for photosynthesis. But I don't know anyone who's actually used it!