How to Make DIY Wildflower Seed Bombs with Kids

One of our favorite outdoor crafts is to make DIY wildflower seed bombs. Not only are these DIY seed bombs easy enough for kids to make in under an hour, but they’re good for the birds, bees, and butterflies in your area. They only require a few ingredients and have the added benefit of letting kids get their hands really messy! Make these and let your kids “seedbomb” the neighborhood or give them as homemade eco-friendly gifts to teachers, neighbors, family, and friends. Everyone will love watching the seed bombs grow into a beautiful patch of colorful wildflowers.

Guerilla gardening with seed bombs

Did you know that “seed bombs” originated in New York City in the 1970s? People use to make these tiny “green grenades” of native herb, flower, and vegetable seeds and then “bomb” large vacant lots where it was illegal or impossible to plant. They called it guerilla gardening! It’s definitely caught on and now seed bombs are still the main weapon guerrilla gardeners use to grow flowers in bare spots, creating pockets of beauty and habitats for pollinators. Seed bombs enable seeds to be sown in hard-to-reach places and locations where the gardener is unable to adequately prepare the ground for traditional gardening.

Bomb responsibly

I’m sure you already know better, but make sure you bomb responsibly. Do not drop seed bombs on private property or in protected parks. Try to stick with spaces that have been neglected or local public areas that could use a bit of rewilding. You may want to check local ordinances before bombing around your town or neighborhood. Also, make sure that the seeds you use are local and native to your area. You wouldn’t want to introduce any new or invasive species of plants or flowers into your local ecosystem with these seedbombs. 

Benefits of wildflowers

Growing a patch of colorful native wildflowers not only adds beauty and charm to your space, but they provide many benefits to the world around us. Wildflowers are native to the area where they grow, meaning they’re conditioned to thrive there.  They require less water and fertilizer, are less prone to disease and are more tolerant to pests. They also provide critical habitat for pollinators and beneficial insects and wildlife, which is important for ecosystem function and pollination. Wildflowers can also improve soil health, prevent erosion, improve water quality, increase yields and enhance forage conditions for livestock. When choosing seeds to use in your seed bombs, make sure you use wildflowers that are local and native to the area they’ll be planted to avoid introducing invasive species.

Make your own seed bombs with kids

Wildflower seed bombs are surprisingly easy to make and so fun! They only require a few ingredients and about an hour to make. They are definitely messy though, so be prepared to have a tub of water or a hose somewhere close to rinse your hand. My kids loved this project and the sensory feeling of squishing the clay between their fingers. They also loved gifting their homemade seed bombs to our neighbors and friends. We can’t wait to see patches of wildflowers sprouting up around our area soon!

What you need to make seed bombs

• Air dry clay (we used this clay for the bombs pictured here, but we’ve also tried this one and it works just as well)
• Potting soil or compost
• Native/local wildflower seeds
• Water

How to make wildflower seed bombs

Step 1: Mix the ingredients

Mix together about 4 parts clay to 1 part potting soil. You don’t have to be exact, but you want more clay than soil so the bombs hold tightly together.

Add your wildflower seeds to the clay mixture (we also added some sunflower seeds). Be sure to only use seeds that are native to your area and not invasive. Native plants will grow better and support more wildlife than non-native species. Not all of the seeds will sprout, so it’s best to have an assortment of flower species and varieties.

Step 2: Add water

Add a little bit of water at a time and squish with your hands until everything is mixed and about the consistency of thick cookie dough. This is definitely a good job for the kids! Make sure not to use too much water or it gets gooey and runny. If you use too much water, add more soil.

Step 3: Roll into balls

Once everything is well mixed, roll the clay into balls about the size of a golf ball. Set them on a tray and let them dry completely until hardened. This may take a couple hours or a couple of days, depending on the humidity levels where you live.

Step 4: Bombs away

Once dry, package your seed bombs in small envelopes or bags to gift to friends, neighbors, teachers, or family members. They’d make great gifts for Earth Day, Mother’s Day, Valentine’s Day, Christmas, Teacher Appreciation, or just because.

A few extra tips for making seed bombs

We made these seed bombs on a pretty chilly day. This led to our clay being very hard to squish/mold initially and made our fingers very cold! We ended up using warm water in our mix, which helped tremendously. So, if your clay is really hard or cold, try warming your water for the mix.

If storing your seed bombs to gift or use at a later date, just be sure to keep them in a cool, dry, dark location to prevent them from germinating. 

If you want to package them use as gifts, I found this cute printable label, which I printed on cardstock and attached with washi tape.

When to bomb

The best time to get out there and start slinging your wildflower bombs in the spring. Check your local weather and try to get them out just ahead of some rain and choose a sunny spot. That will give them the best chance of growing. If there’s no rain coming, maybe add some water. Plant your seed balls anywhere in need of some beauty and color. Hopefully, in a few weeks, you’ll have the beginning of a beautiful patch of your own native wildflowers!

Not interested in getting dirty?

If you’re not into getting your hands dirty, or perhaps you can’t get your hands on all of the ingredients you need, there’s another option! Seedbombs can also be purchased. Seedles makes a really cute and colorful option. Or you can purchase a large pack of 50 native wildflower seed bombs. 

Have you ever made seed bombs?