Making your own seed bombs
It’s as easy as you think and a perfect activity for kids and adults who need a break from the dumpster fire whirlwind world we live in! You only need three ingredients: clay, soil, and seeds.
While you can play around with which types of clay and soil to use, it is important to remember that the types of seeds you plan to use need to be indigenous, or it counteracts one of the fundamental goals of guerrilla gardening, which is to restore the natural landscape with native plant species and pollinators. Before purchasing seeds, look up which grasses, wildflowers, and other seed plants are native to your area.
1 can of calcium bentonite clay (a powder used for diy facemasks, available in health food stores...I got mine from Whole Foods)
1 bag of worm castings (available at Home Depot, Lowes, and many nurseries. You can also get compost or even use wet strips of paper)
1 pouch of wildflower/wild grass seeds, indigenous to the area
A cup of water (or a tiny bowl, use as needed)
Big mixing bowl that you don’t mind getting dirty
Gardening gloves (optional)
Assembly: (use a 5-5-1 ratio with clay, worm castings, and seeds respectively. No exact yield but I used 16 oz clay powder, half a big pouch of seeds, and approx. 2 cups worm castings to make 28 seed bombs)
1) Add 5 parts clay powder to 5 parts worm castings into a large bowl
2) add water in small amounts, mixing with hands or large spoon in between, until a moldable, play-doh consistency is reached
3) add in seeds and mix well
4) roll mixture into balls (you pick the size!) and place on parchment paper
5) store in a dry place so that clay dries. Use soon after making them in order to prevent seeds from germinating insdide the seed bombs!