Home & Garden Garden How to Make Seed Bombs By Kelly Ladd Writer University of Central Florida Before Ladd became a full-time artist, she was a parade performer at Disney World and an editor and prop stylist for Parenting magazine. our editorial process Kelly Ladd Updated May 31, 2017 Seed bombs will bring an actual burst of plant life to your neighborhood. Kelly Ladd Share Twitter Pinterest Email Home & Garden Planting Guides Indoor Gardening Urban Farms Insects What the heck is guerrilla gardening? It's where you take it upon yourself to beautify forgotten plots of land. The guerrilla gardening movement became popular in 1973 thanks to Manhattan resident Liz Christy and a group of underground gardeners known as the Green Guerrillas. They started by throwing seed bombs over fences and into vacant lots, planting sunflower seeds in the medians of bustling NYC streets and placing blooming window boxes on the ledges of abandoned buildings. The following year, they gained permission from the city to transform a vacant lot that was loaded with garbage into an urban edible garden with 60 raised beds. The Liz Christy Community Garden is still alive today. Here's how you can spruce up your 'hood by making your own seed bombs. Materials Clay powderPotting soilSeedsWaterParchment paperBowlPenny (for sense of scale) It doesn't take too much to make a seed bomb. Kelly Ladd Instructions 1. Mix together equal parts of clay powder and potting soil. Pour the water gingerly into the mix. If you add too much water, you'll have to add more clay and soil. 2. Create penny-sized balls of your mixture and then add 5 to 8 seeds of the same variety into each "bomb." 3. Place your "bombs" on a piece of parchment paper and let them dry 24 to 48 hours. Store them in a sealed plastic bag. 4. Get to work by throwing your seed bombs anywhere you'd love to see flowers growing.