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How to make a seed bomb?

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By illuminem

· 8 min read

Introduction to seed bombs

Seed bombing, a heartening blend of gardening and environmental activism, offers a hands-on approach to rewilding and beautifying urban spaces. This grassroots movement empowers individuals to contribute positively to their environment, creating pockets of greenery in otherwise gray and neglected areas. Whether you're a seasoned gardener or someone looking to make a small yet meaningful impact, the journey of making your own seed bombs is both rewarding and transformative.

Seed bombs

The philosophy behind seed bombs

At its core, making seed bombs is more than just a method of planting seeds; it's a statement of care and a step toward environmental stewardship. It represents a desire to replenish what has been lost to urbanization and neglect, fostering a sense of community and responsibility towards our planet. By choosing to make and use seed bombs, you're participating in a global movement toward ecological restoration and beautification.

Understanding the components of DIY seed bombs

The role of clay

Clay is the protective shell of seed bombs, safeguarding the seeds from predators and harsh environmental conditions until the right moment for germination. Its natural properties ensure the seed bomb remains intact upon landing and gradually disintegrates with moisture, allowing seeds to sprout.

Clay powder, specifically natural clay like bentonite clay, can often be found in craft stores, online marketplaces like Amazon, or gardening centers. Pottery supply stores are also an excellent source of pure clay powder, as it's used in ceramics and pottery making.

The importance of compost

Seed bombs

Compost acts as the initial nutrient source for the germinating seeds, giving them the essential boost they need to grow strong and healthy. This component mimics the fertile soil that seeds would find in a natural setting, ensuring they have a rich environment to thrive in from the moment they begin to sprout.

You can purchase high-quality compost or potting soil from local gardening stores, home improvement stores, or nurseries. For those interested in sustainability, creating your compost from kitchen scraps and yard waste is a rewarding way to produce this component at home, although it requires more time and effort.

Selecting flower seeds

Choosing the right seeds is crucial to the success of your flower seed bombs. Native species are always preferred as they are adapted to the local climate and soil, require less maintenance, and provide the most benefits to local wildlife, including pollinators like bees and butterflies.

Native wildflower seeds, herbs, and vegetable seeds can be sourced from local gardening stores, specialized online retailers, or through seed exchange groups. Selecting native species is crucial, so consider consulting with a local botanical garden or extension service to understand which plants are indigenous to your area.

Step-by-step guide to making homemade seed bombs


Before you begin, gather all necessary materials and choose a workspace that can get a little messy. Cover your working area with newspaper or a plastic sheet to make cleanup easier.

Mixing the dry ingredients

Start by mixing the clay powder and compost in a large bowl. Ensure a uniform blend to provide a stable matrix for your seeds. The clay and compost ratio should be balanced to ensure that the seed bombs are neither too brittle nor too dense.

Adding seeds

Introduce your chosen seeds to the mixture. Mix gently to avoid damaging the seeds. This step is where you can customize your seed bombs based on the specific flowers, herbs, or even vegetables you want to grow.

Adding water

Slowly add water to your dry mixture while stirring. Aim for a consistency that holds together without crumbling but isn’t so wet that it sticks to your hands. This might take some trial and error to perfect.

Shaping your seed bombs

Pinch off pieces of the mixture and roll them between your hands to form seed balls about one inch in diameter. The size is small enough to ensure that each seed bomb has a manageable number of seeds, increasing the chances of successful germination.

Seed bombs


Place the formed seed bombs on a tray to dry. Avoid placing them in direct sunlight, which could cause them to crack or harden too quickly. A dry, shaded spot with good air circulation is ideal.

The art of seed bomb deployment

Throwing seed bombs is an act of hope and anticipation. Choose locations that need greenery but ensure you're respecting private properties and local regulations. Abandoned lots, roadside verges, and community gardens often welcome such bursts of life.

The ethical considerations of using seed bombs

While using seed bombs is generally seen as a positive activity, it's essential to consider the ecological impact. Always use native seeds to avoid introducing potentially invasive species into the environment. Research and respect the local ecosystem to ensure that your efforts contribute positively.

The impact on pollinators

Seed bombs can play a significant role in supporting local pollinator populations. By choosing a mix of flowering plants that bloom at different times of the year, you can provide a continuous source of food for bees, butterflies, and other beneficial insects.

Community and education

Making seed bombs offers a fantastic opportunity for community involvement and education. Organizing seed bomb-making workshops or community throw events can foster a sense of unity and purpose, encouraging others to take an active role in environmental stewardship.

Advanced techniques and variations

Seed bomb recipes for specific environments

Adapting your seed bomb recipe to suit specific environments, such as dry or shady areas, can increase the success rate of your efforts.

For arid or desert environments

Arid regions require plants that are drought-resistant and can thrive with minimal water. Succulents, cacti, and deep-rooted perennials are excellent choices for these areas. Consider using seeds like:

  • Blue Palo Verde (Parkinsonia florida): A drought-tolerant tree that provides shade and habitat for wildlife, blooming with beautiful yellow flowers.

  • Desert Marigold (Baileya multiradiata): Bright yellow flowers that can add a splash of color to the sandy landscape.

  • Penstemon (Penstemon spp.): A variety of Penstemon species are native to desert regions, offering colorful flowers and attracting pollinators.

For temperate forest environments

Temperate forests are characterized by moderate temperatures and regular rainfall. This environment supports a wide range of plant life, including:

  • Dogwood (Cornus spp.): Small trees or shrubs that provide beautiful spring flowers and are important for local wildlife.

  • Wild Columbine (Aquilegia canadensis): A shade-tolerant perennial with distinctive red and yellow flowers, attracting hummingbirds.

  • Trillium (Trillium spp.): Spring-blooming flowers that are iconic in temperate forests, adding to the understory's beauty.

For tropical regions

Tropical environments, with their high humidity and rainfall, support a diverse range of plant life. Seed bombs for these regions can include:

  • Butterfly Pea (Clitoria ternatea): A vine with vivid blue flowers, known for its rapid growth and nitrogen-fixing abilities.

  • Red Ginger (Alpinia purpurata): Adds a splash of color with its striking red flowers and attracts a variety of pollinators.

  • Tropical Milkweed (Asclepias curassavica): Supports butterfly populations, including the monarch butterfly, providing essential food for caterpillars.

For coastal areas

Coastal areas face unique challenges, such as salt spray and sandy soils. Plants for these regions need to be hardy and salt-tolerant, such as:

  • Sea Oats (Uniola paniculata): Helps with erosion control, stabilizing sand dunes while providing habitat for wildlife.

  • Beach Sunflower (Helianthus debilis): Offers bright yellow flowers and thrives in sandy soils, attracting pollinators.

  • Seaside Goldenrod (Solidago sempervirens): A salt-tolerant perennial that adds color and supports local insect populations.

For urban environments

Urban areas can benefit from seed bombs that include pollution-tolerant and space-efficient species, such as:

  • Common Milkweed (Asclepias syriaca): Supports monarch butterflies and fits into small urban green spaces.

  • Black-Eyed Susan (Rudbeckia hirta): Offers bright, cheerful flowers and is resilient in various soil types.

  • Lavender (Lavandula spp.): Not only brings fragrance and color but also attracts pollinators and can thrive in tough urban conditions.

Seasonal considerations

The timing of making and deploying seed bombs is crucial. Understanding the growing cycle of your chosen seeds will help you determine the best times of year to make and throw your seed bombs for optimal germination and growth.

Monitoring and maintenance

While seed bombs are designed to be a low-maintenance gardening solution, returning to the sites where you've deployed them to monitor their progress can provide valuable insights into their effectiveness and the needs of the emerging plants.

The future of seed bombs

As urban areas continue to expand, the importance of initiatives like making seed bombs becomes ever more apparent. By actively participating in these small acts of rebellion against urban decay, we can contribute to a greener, more vibrant urban future.


The practice of making seed bombs is a powerful tool in the arsenal of anyone looking to make a positive impact on their environment. It combines the simplicity of nature with the power of human action, resulting in a rewarding experience that benefits both the individual and the planet. Whether you're looking to beautify your neighborhood, support local wildlife, or simply engage in a fulfilling outdoor activity, seed bombing offers a path to achieving these goals.

By following this detailed guide, you're well on your way to becoming a DIY seed bomb expert, ready to spread greenery and positivity in your community. Remember, each seed bomb thrown is a step towards a greener, more sustainable world. So, gather your materials, rally your friends and family, and start your journey towards making the world a little more lush, one bomb at a time.

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