Discover the Benefits of Soil Blocking for Seed Starting

If you've ever found yourself overwhelmed by trays, transplant shock, or the endless hunt for sustainable growing methods, soil blocking might just be your new favorite technique. It’s eco-friendly, efficient, and surprisingly satisfying once you get the hang of it. Here’s everything you need to know to get started.

🌱 What is Soil Blocking?

Soil blocking is a seed-starting method. It involves compressing dampened compost into block shapes using a special tool. These blocks hold together without trays or pots. They create a self-contained growing space for each seed. The result? Neat rows of little compost "brownies." These are gentle on roots and easy to transplant.

🌿 Why Choose Soil Blocking?

Soil blocking offers several advantages.

• Eco-Friendly: Say goodbye to plastic trays and hello to compost-only planting. This method reduces waste and promotes sustainability.

• Healthier Seedlings: Blocks naturally air-prune roots. This prevents root circling and encourages stronger, more compact plants.

• Space Efficient: When using smaller blocks, you can fit many into a single tray or recycled container. I swear by large strawberry punnets!

• No Transplant Shock: Because you’re not disturbing the root system, plants transplant easily and thrive quickly in the garden.

• They are quick and easy to prick out. No more trays of dread.

  
  

🌱 What You’ll Need

To get started with soil blocking, gather the following items:

• A soil blocker tool (available in various sizes)

• Quality compost (Jane recommends using it straight out of the bag—no fancy mixes required)

• A flat tray or recycled container to place your blocks on

• Water to moisten your compost

  
  

🌿 Step-by-Step Guide

Here’s a simple guide to making your own soil blocks:

1. Moisten Your Compost: You want it wet enough to hold together but not sloppy. It’s best to use gloves for this step!

   
   

2. Load the Compost: Wiggle the blocker tool back and forth over the wet compost. Push down to pack the compost into the blocks.

   
   

3. Press and Release: Place the loaded soil blocker over the tray. Press down firmly on the handle and then release the blocks onto your tray.

   
   

4. Sow Your Seeds: Place one seed per block. Use a toothpick for tiny seeds like Snapdragons or China asters.

   
   

5. Label Everything: Mystery seedlings might be cute, but they won’t help your crop planning.

   
   

6. Water with Care: Soil blocks can dry out quickly. Keep them moist but not soggy.

   
   

🌿 Common Challenges

While soil blocking is rewarding, it can present challenges. Here are common issues and how to tackle them:

• Crumbly Blocks: If your blocks crumble, the compost might be too dry or not compacted enough. Adjust by adding more water or compacting the compost more firmly.

• Overly Wet Blocks: If your blocks become soggy, reduce water during the initial mixing.

  
  

🌱 Tips for Success

Here are additional tips to make your soil blocking successful:

• Practice makes perfect! Your first few blocks may not look perfect, but you’ll improve quickly.

• Ideal for small and medium seeds. Larger seeds like sweet peas or courgettes are better suited to pots.

• Place under a propagator lid to help retain moisture. A heat mat will help speed up germination.

  
  

💚 Final Thoughts

Soil blocking isn’t just a trend. It’s a mindful, sustainable way to start your seeds. It aligns with eco-friendly values and helps create a productive garden. Grab your blocker, some compost, and a touch of patience, and give it a try.

Happy sowing!

Discover More Resources

Read more of our guides:

• Dahlias from Leaf Cuttings

• Growing Sweetpeas

  
  

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