The origin of hash plants

Day 63. The Afghani is catching up. Buds are nicely swelling. She is the slowest one, so she still has some time to grow flowers. Once again I'm seeing those brown spots that look like some sort of deficiency. But I do not think there is any lack of nutrients, so maybe the light is just too strong so the roots cannot uptake the amount of stuff she needs. Maybe next grow I will experiment with some foliar feeding.