Don't waste your time or money. My almost 6' ( due to topping the last 6 weeks, to remain legal) x 9' mother is in a 10 gallon hole with my soil. Smaller plants are in 5 gal holes. 10 gal. of good soil mix with minimum feeding until flower will easily grow 8 to 10" footers. 5 gals should finish at around 8'. Massive holes aren't needed in ground. Only in pots. And the raised bed thing is great. I emptied mine this year of 4 year old compost. Need to refill it when my new pile is ready in the spring. Better results than exposed sand, clay and topsoil. Less watering as well.
The strains are
re 98 BK, 2 strains of gg4(3 phenos), Northern Lights, Dragon Fruit(2phenomes), Lucky Charms(3phenomes), Snow Temple(2phenomes). The big GG4 is 11 months old. Last years mother. The Northern is around 6 mos. The rest are almost 11 weeks from seed. Would be larger held them in 2 gal pots for 3-5 weeks past optimum planting. Waiting to show sex. But I have a reliable, easy stress free system until harvest.