DWCHCanswered grow question 5 years ago They're unfortunately not going to stretch much at this point , high roller is bang on there.. in the case of the polyculture planting, autos aren't the best choice, because of nutrient competition during early growth, also, your par on the hlg 100 is too low at 18" to flower, seedlings and preveg or week 1yes, bringing it down to 14-16 in flower, and 24hr light until it preflowers, then 186 hope this helps... On a side note, stinging nettle is known to increase essential oil production of neighboring plants👈👍 keep it Green!