Colander vs Terra Cotta?

[hemmy]

I think the one you have is the "plastic" one that have the bigger holes? Or the fabric one?

I was using the white fabric folded bottom ones for the concrete blocks. But I might I have left them for a season too long. If I used them here in the Midwest, I’d mulch the blocks to keep them out of the direct sun. I do think the root air pruning is also beneficial for some species to get complex branched roots which seems to lead to more branching on top.

I also have the black plastic molded in most all sizes and a few of the white “skirts” to keep the sun off of them.

 

[Maiden69]

I also have the black plastic molded

I have some of the 18 seedling starters tray with separate cubes that I am trying this year for the first time, and 2 of the 1 gal size. I also bought a 15 gal one to try on my big cypress but I'm still undecided if I'm going to use it. I have a few tridents, 3 gingko, and around 12 BCs seedlings started on the cubes, but with a stainless washer right in the middle of the cube to strangle the tap root as soon as possible.

Depending on the outcome I think I'm going to move into the black pint size Root Pouch seedling starters that @cmeg1 use. I still think that the Root Pouch entrapment design is far superior to air pruning pots or bags.