During the HortiContact, we asked our stand visitors the question: how many photons fall on a sunny summer's day on 1 hectare in an unshaded and unscreened greenhouse?
The correct answer – 1.5 x 10²⁹ photons – was given by Anja Dieleman from Wageningen University & Research. Congratulations Anja!
On behalf of Sendot, Frits Van Horssen presented Anja with the prize during the break at the LichtEvent. She will now have an orchid on her desk that requires no water or light.
Would you also like an orchid like this? We're at the GreenTech again – come and visit us!
