What are soil blocks?
Soil blocks are made using a handheld tool called a soil blocker, which is pushed into your wet soil mix, packed tightly, then the blocks are pushed out and placed on a waterproof tray with at least a half inch rim. You can then plant seeds right away into your soil blocks!
Why make your own soil blocks?
Using soil blocks when starting seeds can bring a myriad of benefits to gardening. It is an excellent approach to seed starting that allows gardeners to eliminate waste, cost over time, and storage issues that arise when seed starting. There is no need for plastic seed starting trays or inserts due to the soil blocks ability to hold its form. Soil blocks also encourage air pruning, which can lead to denser root development before planting.
Not only is it cost-effective, but you can make a custom mix of living soil rather than use a sterilized blend. The seedlings can benefit from beneficial microbes and large healthy root systems due to the cube shape. When you transplant your seedlings into the ground, there is no disturbance to the roots or plant from pushing them out of a pot.
How to care for soil blocks and seedlings:
Keep your blocks covered until the seeds germinate. Once they are going strong remove the cover, give them plenty of light, and keep them evenly moist but not soggy. You can add water to the bottom of the tray to allow the blocks to soak up the moisture or mist them regularly.