Has anyone tried these? The idea and design look simple.
YouTube videos:
Overview
How to use

This is the first I see of this particular pot, but there have been similar pots around for a while. I have often thought about trying to make my own from hardware cloth, but haven't gotten around to it yet.

https://www.google.com/search?...

They look interesting , but I wonder how much more water they would require. I would think they would dry out much faster and insects would have easy access to the roots.

I have used the net pots that Jay posted for starting things that don't like being transplanted. I just plant the whole pot when they're ready to set out. But I mostly grow annuals. That might not work too well for a perennial!

I've heard that "soil cubes" are based on the principle of air pruning roots.

I do soil blocks as well but if you place them too close and on a solid sheet the air pruning doesn't work

It took awhile to get the hang of making them but I really like them. I have the mini, the 4 and this year I got a 5 block maker. My son got the super big one for things like cukes, etc but they're so dang heavy! I just prefer to direct sow cukes and melons.

I haven't tried soil blocks yet.

But I'm thinking about experimenting on part of one 8x16 propagation tray. The cells are square (and tapered) and have big square ridges down each side - I assume to reduce root-circling, althoguh I've heard them called ventilation ribs.

But it means that each cell has not 4 corners, but 12, that roots ought to be channeled into.

If I made a series of holes up and down each "corner", maybe roots would be guided to those corenrs, out the holes, and dead-end due to root pruning. But it might require the "puckered", "sticking-out" hole illustrated in the ad.

If they did p[rune, and if that stimulated roots to branch, it might be A Good Thing.

Is this an existing model or something you are thinking of designing?

I'm just thinking of poking holes into some of the cells in an 8x16 prop tray I already have. Or maybe melting some slits. See what happens to the roots.

However, I drew that from memory. When I went home and looked at one, I saw that the "notches" in the sides are really more like "bumps". I'll re-draw just one side: