So i have this 2x1x2 m outdoor greenhouse (6.5'x3'x6.5') with 6 plants which are still in veg. They are haze strains which need to spend 74 days in flower. I want them to start flowering soon (mid July) so that they're harvested before the colds start in late September. To make a 12/12 cycle i will have to cover the greenhouse entirely with light proof fabric at every day for 12h. Although i'm on a budget and don't want to spend 150-ish Euros on blackout curtains which i found online. Any suggestions on cheap light-proof material to cover a greenhouse this size?
Otherwise, if I don't cover the greenhouse, how do I know when my plants will start flowering? 12 hours of solar day length is 25 september where I live, which is too late obviously.
Otherwise, if I don't cover the greenhouse, how do I know when my plants will start flowering? 12 hours of solar day length is 25 september where I live, which is too late obviously.
