AndreaObzerova / Getty Images
Key Takeaways
Soil blocking is a healthy way of starting plants from seed.
To start soil blocking, you only need a simple compression tool and the correct soil mixture.
What Is Soil Blocking?
AndreaObzerova / Getty Images
Soil blocks are compressed blocks of soil that have no outer container.
The soil blocks act as both the container and the growing media.
Want more gardening tips?
The roots will “air-prune” themselves.
This results in healthier root systems.
Though slow and laborious, it’s a good way to experiment with soil blocking.
A better option is to use a soil blocking tool.
Four-cell soil blockers cost $15 to $25.
“Ideally, youve compacted the soil mixture enough to ensure no air pockets remain.”
The soil blocker presses a dimple on top of the block that’s ready to receive seeds.
Add enough warm water to the dry mixture until you’re able to stick the soil together by hand.
If it’s possible for you to form a ball and it sticks together, it’s ready.
The mixture should not be wet or muddy.
It’s time to move the block when the seeds have sprouted and the roots reach the edges.
Transfer the block into a larger block or plant the block in the ground.
Start heat lovers like tomatoesin the smallest block to speed up germination, Craig says.
Soil Blocking Tips
Refine your soil blocking techniques with these tips from Craig:
Making Soil Blocks.
Master Gardener Program / PennState Extension / The Pennsylvania State University.
