SOGO growingcell booklet, 4 compartments, 5 pcs.

These growing cells are perfect for creating optimal conditions for your seedlings. The cells allow the seedling to develop long and sturdy roots. The book system makes it easy to inspect the roots and prick out the seedlings without damaging the roots.
Create strong and vigorous root balls.
Reusable

How does it work?
The main root grows straight down to the large opening.
The main root makes contact with the air and dies at the end.
The plant compensates for this by forming many new roots.