In nature, if roots come into contact with air, they stop growing. The root tips are "burned" off by the air, which causes the plant to produce new and healthy branching roots in non-airy directions. This is a healthy process, and is known as 'air pruning'.
When plants grow in plastic pots and planters, the only place roots are exposed to air is often at the base. The rest of the plastic blocks airflow to the roots, so they never receive a signal to stop growing. Instead, the roots grow 'round and 'round in the planter until the plant becomes 'root bound'.
If you've ever repotted a houseplant, the picture above probably looks familiar!
Because our Grow Bags are made of a porous fabric, any time a root gets near the edge, they'll recieve enough airflow to signal the air pruning process.
This means your plants end up with more diverse, branching root balls – and don't waste precious growing energy on becoming root bound!
The 'fluffier' and more intricate a plant's root ball is, they healthier they'll generally be. And for vegetables, you'll get much better yields from a plant grown in soil that's well aerated.
Long story short? More airflow to plant roots = healthier plants and bigger harvests!