Been very busy but had to say thanks for this technique. It’s been extremely helpful in a way I don’t think I expected.
I have comments and questions
Makes up potting a breeze for my system.
I typically place the root bound seedling in its new home and pack all around the solo cup with new soil until I get it set height wise. (Currently all went into pre painted one gallon nursery pots)
I then remove the seedling/cup and spray the soil (the hole and perimeter with rooting liquid hormones)
The magic happens when I remove the seedling.
I also spray the root ball with rooting liquid before sprinkling it with micorrizae. This process often led to a bit of crumbling or soil loss AND it would often be impossible to get micorrizae to adhere to the perimeter of the root ball.
Not anymore!!!
I can rotate the seedling in one hand and gently shake the micorrizae onto the root ball with confidence it won’t crumble in hand.
I then place it in its new pot, tamp soil, water well, and on to the next.
Huge anxiety reliever.
My questions/observations might be stupid or wrong.
I noticed the plants needed watering more often and it seemed I had to take a longer slower approach to watering.
I guessed it was due to the massive root system and very little air space in the soil (which alerted me “time to up pot”)
Did I get this wrong?
I even painted my solo cups so I lost the visual cues of seedlings being root bound.
Just hoping I missed this info here. It’s not like I spent hours researching this, I knew I was gonna do it.
Hoping this helps others that might also be lazy like me before starting a new technique, and hoping I figured it out accurately.
Thanks again @OldUncleBen