Hello #gardening friends, I have a product review (I guess two reviews) for y’all!
I decided to try #soilBlocks this year, and I got the nice metal 3/4” and 1.5” blockers from Johnnys. They’ve worked very well for me.
But the largest size, the one you transplant your 1.5” blocks into, was three times the cost of the medium one!
So when I saw this Fiskars soil blocker for less than $20, I decided to try it out. Verdict: it sucks, especially for up-potting seedlings. I was able to make decent blocks, but there’s only a tiny seed hole at the top. I had to scoop each block out like a pumpkin to wedge the square transplants in, and by that point it was just a mound of nice mud. This tray is mostly flowers which can go out any time they’re big enough, but there’s no way I’m going to put my tomatoes in communal dirt blobs 😅
TLDR: Just keep using your 4” pots.
Link to Johnnys: https://www.johnnyseeds.com/tools-supplies/seed-starting-supplies/soil-blocking/
Link to Fiskars: https://www.fiskars.com/en-us/gardening-and-yard-care/products/food-gardening/soil-block-maker-340120-1001
Soil Block Makers | Soil Blocking Supplies | Johnny's Selected Seeds

Try soil blocking for more vigorous seedlings and to reduce the waste and expense associated with plastic pots. Our soil blocking supplies are 100% guaranteed.

@donkeyherder 🙏🏼 Thank you for figuring this out and posting! I was going to try it, but wondered about the physics of it all, which you've shed good light on. 😆
@SandHillThicket you’re so welcome! It seemed like a timely review :)