Seed Bombs! Math and Science with the National Parks

Friends School of Minnesota 5th and 6th graders worked with National Park rangers, volunteers, and members of the Mississippi Park Connection to make seed bombs for prairie restoration work within the Mississippi National River and Recreation Area (MNRRA). This hands-on seed ball activity is a great way to bring service work into schools and connect students to a unique natural area in their community.

Posted March 24, 2016

Students rolled compost, soil, sand, and 3 types of seeds into balls. These seed bombs will be thrown at a field trip on April 14th to Coldwater Spring, a part of the Mississippi National River and Recreation Area that is being restored to an oak savanna/prairie complex. FSMN students have been going to Coldwater Spring and doing service work there since it opened in 2012.

Students calculated the average number of seeds per bomb (385), the average number of bombs per bowl (9), bombs per tray (90), and total number of trays (19)and total bombs per class. They then figured out how many square feet of prairie they were helping to restore and what that would look like if it were a perfect square vs the many rectangular or other geometrical options!  The 1710 bombs made by 5th and 6th graders mean they will be dispersing about 658,350 seeds in April when they go throw them at Coldwater Spring. They figured that their seed bombs would plant 855 square feet of new prairie if they were seeding new land! However, at Coldwater Spring, our seeds are actually enhancing larger amounts of prairie that is already in the process of being restored.

Seed bombs are balls of compost, soil, sand and seeds that can be stored and then distributed at the proper season. These seed bombs contain Minnesota natives: Side Oats Grama, Blue Grama, and Little Blue Stem.

See for yourself

The best way to experience what FSMN has to offer your child is to join us for a tour.

Take a Tour
Stay in touch with FSMN!

Friends School of Minnesota Logo

Our Mission

Our mission is to prepare children to embrace life, learning, and community with hope, skill, understanding and creativity. We are committed to the Quaker values of peace, justice, simplicity and integrity.

Learn more


Find upcoming school events and programming.

Find Events


Friends School of Minnesota
1365 Englewood Avenue, Saint Paul, MN 55104

Hours & Directions
Staff Directory

Friends School of Minnesota