I start my seeds out in Jiffy pots the small 5'in...when thier about 5-7'in then place the Jiffy pot in the soilless in 3 gallon pots until finish lot less stress since they never get disturbed......ST
I clone cuttings directly to my premixed soil in 4" square pots. These pot are made to fit perfectly in a seedling tray in rows of 2x4 for 8 total in the tray. The humid dome fits perfectly over the edges of the pots creating a perfect humid environment. Cloning directly to soil has been @ 95% successful on average. 5 to 7 days later I remove the hoods for good. When I see new growth I slowly start feeding. I veg for 3 weeks or so after that point (about 14" to 18" high).
When I pull these plants out from the their 4" pots, the roots are packed.
Then I transplant 1 time to 3 gallon pots and move to the flower room.
Easier for me and the plants do just fine. simple stupid.