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Try your Hand at Seed Dispersal: Seed Balls 
Grade Level: 3 
In this activity students will learn about re-vegetation efforts on disturbed lands and make seed 
balls to re-vegetate their own area of disturbed land. 
Time of Year 
Ideally any time in the spring, after frost and before summer vacation. 
Background 
This activity looks at an innovative method used around the world to re-vegetate damaged 
disturbed land and other barren landscapes where the soil is dry, thin, compacted and/or rainfall 
is unpredictable. This land-restoration method is used to re-introduce plants and biodiversity into 
a challenging landscape where growing crops with other methods is too expensive or too hard to 
do. 
This is an innovative but simple technology, called a “seed ball.” 
Seed balls can help seeds germinate, and give young plant all the nutrients they will need 
following germination to get established. To make a seed ball you will be rolling a seed, or many 
seeds, in clay and compost to create a ball that you will then dry. Seed balls are usually made by 
the hundreds or thousands. Once they are dry they can be dispersed: thrown by hand or truck, or 
even dropped from an airplane or hot air balloon. Seed balls are usually made from a wide 
selection of different kinds of local plants that have been known to do well in similar areas. The 
hope is that even if some seeds are not able to do well, some will sprout, and start to take hold, 
and the process of re-foresting or vegetating the area will begin. 
Why can seed balls work? 
In dry areas, the shade created by the shape of the ball actually helps to conserve moisture. When 
the seeds begin to germinate and the ball breaks apart, the small pile of crumbled clay and 
compost provides the starting medium for the root system, and is still heavy enough to anchor 
the emerging seeds to the ground. The clay also provides protection from hungry birds and other 
animals during germination. 
The small leaves of the new plants then provide shade for the soil to conserve more soil moisture 
so it can be used by the growing plant. Those plants that are able to mature, will then produce 
their own seeds and provide shelter once the second generation seeds fall to the ground. The 
seeding and regrowth continues until hopefully complete plant cover is achieved. 
Materials 
Lesson and agricultural enhancement supported by a grant from the Massachusetts Society for the 
Promotion of Agriculture.
* Three parts dry, sifted compost 
* One part seeds: Best to use a mix of local native wildflowers or other beneficial plants 
attractive to birds, pollinators and animals. 
* Five parts dry red clay powder (available at pottery or art supply stores or ask your local potter. 
You could also use river clay, if you have access to a place to sustainably harvest it.) 
* One to two parts water 
* Cookie sheets or other surface, for drying the balls 
* Large containers to mix the ingredients in 
* Wooden spoons to mix with 
* Aprons and gloves if you like, also a ground throw such as an old table cloth. 
* Paper bags or cardboard boxes to store the seed balls in. 
Preparation 
Gather the materials and identify an area of your schoolyard or neighborhood that could use 
re-vegetating. If you don’t have one, you could simply see how seed balls work when put on the 
surface of a garden bed, or send them home with students to put in abandoned areas around 
town! To measure out the parts, I use 8oz plastic cups. 
Introducing the Lesson 
Introduce the lesson by talking about seed balls, and about disturbed lands around the world. You 
might want to talk about the problems of expanding deserts due to human activity. You could talk 
about why seed balls are a hopeful thing that we can do to help to address this problem. You 
could perhaps show a short video about seed balls (Several videos are included in resources, 
including one about the Thai government’s seed ball initiative: http://www.youtube.com/watch? 
v=IpN9-45XPrs) 
Activate prior knowledge 
Who can remember the ways in which plants disperse seeds? Why is seed dispersal important to 
a plant? How do we usually plant seeds in our garden? 
Engage Student Interest 
We are going to join people from around the world in making seed balls to help encourage plant 
cover and biodiversity around the planet. 
Procedure (Total time approximately 1 hour to make, plus time to dry and ‘sew’ the seed balls) 
Introduce the lesson (10 mins) 
Outside (optional, 15 mins) 
1. Visit your site. What makes this place a disturbed area? What problems might plants have 
when trying to grow here? Look at the soil, plants growing already etc. Why would we want to 
re-vegetate places like this? (to help pollinators, animals, to look beautiful, to contribute to world 
wide plant cover, to increase bio-diversity etc.) 
Lesson and agricultural enhancement supported by a grant from the Massachusetts Society for the 
Promotion of Agriculture.
In the Classroom: 
2. (5 mins) 
Get out your seeds and have students mix them in a large container. Talk about why you picked 
those particular seeds, and why we include so many different kinds of seeds. 
3. (20 mins) 
Next mix the compost, clay and half the water together in a large bowl, or a few bowls if you 
have a lot of kids. You could provide aprons and gloves to do this as it can get messy. Mix and 
add water, a little at a time, until the mixture is about the consistency of dough, and can be balled 
up easily without falling apart - about the consistency of modeling clay. 
4. (10 mins) 
Now add the seeds. Kneed them in until they are evenly distributed, then roll the clay up into 
small balls about the diameter of a quarter. 
5. Place the balls on trays to dry for about 2 days, or until hard. Store in a paper bag or cardboard 
box (not a plastic bag). 
6. Now head out to sow them. Tossing them gently is more fun than placing them! Do not water 
or bury them. 
7. Visit them in a week or so to see what has happened, and then periodically to see how your 
re-vegetation efforts have come. 
Assessing Student Knowledge 
What does a plant need? How do seed balls help plants get what they need? Why are people 
around the world using seed balls? 
Extensions 
Track vegetable growth in your disturbed area by mapping how much plant coverage area there 
is in a square foot. You can do this by drawing a grid and coloring in squares that have more than 
a certain percentage (e.g. 75%) of cover. 
Other extensions could be to gather and dry naturally occurring clay to use in your seed balls., 
and/or to gather local wildflower seeds in the fall to use in your seed balls in the spring. 
* MA Department of Ed. Standards in this lesson (for grade 2) * 
Life Science Standard 1. Recognize that animals and plants are living things that grow, 
reproduce, and need food, air and water. 
Life Science Standard 3. Recognize that plants and animals have life cycles. 
Lesson and agricultural enhancement supported by a grant from the Massachusetts Society for the 
Promotion of Agriculture.
Life Science Standard 8. Identify the ways in which an organisms habitat provides for its basic 
needs. 
Books and Resources 
Massachusetts Agriculture in the Classroom Newsletter on Seeds 
http://aginclassroom.org/Newsletter/spring2006.html 
NPR story (written and audio) about organizations in Brooklyn NY using seed balls: 
http://www.npr.org/templates/story/story.php?storyId=103129515 
Egyptian Seed Ball Campaign: http://www.youtube.com/watch?v=eTZcxCZWFbw 
Thai Government seed ball initiative: http://www.youtube.com/watch?v=IpN9-45XPrs 
(photo: Dave Miller 2009) 
P. O. Box 345 Seekonk, MA 02771 
www.aginclassroom.org 
Please Visit the Massachusetts Agriculture in the Classroom Website 
to tell us how you used this resource. 
Lesson and agricultural enhancement supported by a grant from the Massachusetts Society for the 
Promotion of Agriculture.
Thanks! 
Lesson and agricultural enhancement supported by a grant from the Massachusetts Society for the 
Promotion of Agriculture.

More Related Content

Grade 3 School Garden Lesson Plan - Seed Lesson; Seed Balls: Try your Hand at Seed Dispersal ~ Massachusetts

  • 1. Try your Hand at Seed Dispersal: Seed Balls Grade Level: 3 In this activity students will learn about re-vegetation efforts on disturbed lands and make seed balls to re-vegetate their own area of disturbed land. Time of Year Ideally any time in the spring, after frost and before summer vacation. Background This activity looks at an innovative method used around the world to re-vegetate damaged disturbed land and other barren landscapes where the soil is dry, thin, compacted and/or rainfall is unpredictable. This land-restoration method is used to re-introduce plants and biodiversity into a challenging landscape where growing crops with other methods is too expensive or too hard to do. This is an innovative but simple technology, called a “seed ball.” Seed balls can help seeds germinate, and give young plant all the nutrients they will need following germination to get established. To make a seed ball you will be rolling a seed, or many seeds, in clay and compost to create a ball that you will then dry. Seed balls are usually made by the hundreds or thousands. Once they are dry they can be dispersed: thrown by hand or truck, or even dropped from an airplane or hot air balloon. Seed balls are usually made from a wide selection of different kinds of local plants that have been known to do well in similar areas. The hope is that even if some seeds are not able to do well, some will sprout, and start to take hold, and the process of re-foresting or vegetating the area will begin. Why can seed balls work? In dry areas, the shade created by the shape of the ball actually helps to conserve moisture. When the seeds begin to germinate and the ball breaks apart, the small pile of crumbled clay and compost provides the starting medium for the root system, and is still heavy enough to anchor the emerging seeds to the ground. The clay also provides protection from hungry birds and other animals during germination. The small leaves of the new plants then provide shade for the soil to conserve more soil moisture so it can be used by the growing plant. Those plants that are able to mature, will then produce their own seeds and provide shelter once the second generation seeds fall to the ground. The seeding and regrowth continues until hopefully complete plant cover is achieved. Materials Lesson and agricultural enhancement supported by a grant from the Massachusetts Society for the Promotion of Agriculture.
  • 2. * Three parts dry, sifted compost * One part seeds: Best to use a mix of local native wildflowers or other beneficial plants attractive to birds, pollinators and animals. * Five parts dry red clay powder (available at pottery or art supply stores or ask your local potter. You could also use river clay, if you have access to a place to sustainably harvest it.) * One to two parts water * Cookie sheets or other surface, for drying the balls * Large containers to mix the ingredients in * Wooden spoons to mix with * Aprons and gloves if you like, also a ground throw such as an old table cloth. * Paper bags or cardboard boxes to store the seed balls in. Preparation Gather the materials and identify an area of your schoolyard or neighborhood that could use re-vegetating. If you don’t have one, you could simply see how seed balls work when put on the surface of a garden bed, or send them home with students to put in abandoned areas around town! To measure out the parts, I use 8oz plastic cups. Introducing the Lesson Introduce the lesson by talking about seed balls, and about disturbed lands around the world. You might want to talk about the problems of expanding deserts due to human activity. You could talk about why seed balls are a hopeful thing that we can do to help to address this problem. You could perhaps show a short video about seed balls (Several videos are included in resources, including one about the Thai government’s seed ball initiative: http://www.youtube.com/watch? v=IpN9-45XPrs) Activate prior knowledge Who can remember the ways in which plants disperse seeds? Why is seed dispersal important to a plant? How do we usually plant seeds in our garden? Engage Student Interest We are going to join people from around the world in making seed balls to help encourage plant cover and biodiversity around the planet. Procedure (Total time approximately 1 hour to make, plus time to dry and ‘sew’ the seed balls) Introduce the lesson (10 mins) Outside (optional, 15 mins) 1. Visit your site. What makes this place a disturbed area? What problems might plants have when trying to grow here? Look at the soil, plants growing already etc. Why would we want to re-vegetate places like this? (to help pollinators, animals, to look beautiful, to contribute to world wide plant cover, to increase bio-diversity etc.) Lesson and agricultural enhancement supported by a grant from the Massachusetts Society for the Promotion of Agriculture.
  • 3. In the Classroom: 2. (5 mins) Get out your seeds and have students mix them in a large container. Talk about why you picked those particular seeds, and why we include so many different kinds of seeds. 3. (20 mins) Next mix the compost, clay and half the water together in a large bowl, or a few bowls if you have a lot of kids. You could provide aprons and gloves to do this as it can get messy. Mix and add water, a little at a time, until the mixture is about the consistency of dough, and can be balled up easily without falling apart - about the consistency of modeling clay. 4. (10 mins) Now add the seeds. Kneed them in until they are evenly distributed, then roll the clay up into small balls about the diameter of a quarter. 5. Place the balls on trays to dry for about 2 days, or until hard. Store in a paper bag or cardboard box (not a plastic bag). 6. Now head out to sow them. Tossing them gently is more fun than placing them! Do not water or bury them. 7. Visit them in a week or so to see what has happened, and then periodically to see how your re-vegetation efforts have come. Assessing Student Knowledge What does a plant need? How do seed balls help plants get what they need? Why are people around the world using seed balls? Extensions Track vegetable growth in your disturbed area by mapping how much plant coverage area there is in a square foot. You can do this by drawing a grid and coloring in squares that have more than a certain percentage (e.g. 75%) of cover. Other extensions could be to gather and dry naturally occurring clay to use in your seed balls., and/or to gather local wildflower seeds in the fall to use in your seed balls in the spring. * MA Department of Ed. Standards in this lesson (for grade 2) * Life Science Standard 1. Recognize that animals and plants are living things that grow, reproduce, and need food, air and water. Life Science Standard 3. Recognize that plants and animals have life cycles. Lesson and agricultural enhancement supported by a grant from the Massachusetts Society for the Promotion of Agriculture.
  • 4. Life Science Standard 8. Identify the ways in which an organisms habitat provides for its basic needs. Books and Resources Massachusetts Agriculture in the Classroom Newsletter on Seeds http://aginclassroom.org/Newsletter/spring2006.html NPR story (written and audio) about organizations in Brooklyn NY using seed balls: http://www.npr.org/templates/story/story.php?storyId=103129515 Egyptian Seed Ball Campaign: http://www.youtube.com/watch?v=eTZcxCZWFbw Thai Government seed ball initiative: http://www.youtube.com/watch?v=IpN9-45XPrs (photo: Dave Miller 2009) P. O. Box 345 Seekonk, MA 02771 www.aginclassroom.org Please Visit the Massachusetts Agriculture in the Classroom Website to tell us how you used this resource. Lesson and agricultural enhancement supported by a grant from the Massachusetts Society for the Promotion of Agriculture.
  • 5. Thanks! Lesson and agricultural enhancement supported by a grant from the Massachusetts Society for the Promotion of Agriculture.