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Westport North Seed Bomb Guide

Seed bombs are a fun project for over the school holidays and a great way to propagate seeds in your garden. Try Westport North’s very own Seed Bomb recipe - all you have to do is literally throw your seed bomb at the garden and wait for your delayed explosion of colour!


  • 6 cup sized chunks of potters’ clay.
  • 1 cup of seed mix – this is a mixture of seeds of your choice. Bigger seeds will work better than fine seeds. Calendula, sunflower, radish seeds are examples of seeds which work well.
  • 1 cup of Tui Blood & Bone.
  • 2 cups of Tui All Purpose Potting Mix.

This mixture will make about 30-40 seed bombs.


  1. Put all the ingredients into a wheelbarrow or big bucket to mix.
  2. Gradually add water, mixing all the time, until you get a nice tacky texture.
  3. Shape handfuls of mixture in round balls about the size of a golf ball.
  4. Allow 48 hours for your seed bombs to dry. Once dry they are ready to use!

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Westport North Seed Bomb Guide Comments

  • Great way to introduce kids to junior gardening.

    Liz Finlayson

  • What an amazing idea! I can't wait to try it with my grandchildren.

    Helen Millen

  • Love the seed bomb recipe


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