Six strain Cannabis train

Well - lucky me - they all popped. Took 4 days for them all to emerge from the root riot cubes, (they are currently between 2-5 inches. The Neville's Haze is the most vigorous. The Northern soul was the slow-poke. They have been getting sun for 3 days now. Tonight they go under a LED system raised to about 36 inches to hit them softly. After 2-3 days of that - I will bring the light down. I will start lightly Foliar spraying them tomorrow. Everything is looking good- so far. On a sad note my outdoor plants took a hard frost last night despite being under cover. The last pic is of the Orinoco, she is almost black and smells amazing. I am debating to harvest or let roll for another week, my other outdoor ladies look sad and droopy.