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- Gather materials and get inspired: Get a few small pots, some soil or just dirt from the ground and one or more packets of seeds. We love herbs (e.g. thyme, basil, chives) since they grow easily, stimulate senses and are tasty to harvest. We also love to plant zinnia's after we read Christie Matheson's Plant the Tiny Seed.
- Introduce the idea: Ask, “Where do you think all of these plants come from? What does it take to start a plant? to grow a plant?” Then, off to the races with some dirt, seeds and water to watch it all unfold.
- Set up soil: If your family composts, you can use or add some compost to your soil. For a sensory stimulating twist, get a large container and crush up a few eggshells with your soil (eggshells provide enriching calcium and are super satisfying to crush!). Put soil into the pots so that they are nearly full and loosely packed. Add water to the soil before you add the seeds so that the soil is moist but not soggy.
- Investigate seeds: Take a minute or two to play with and observe the seeds. Put a few in your hands. Roll some between your fingers. Notice things. You can save a few and put them in a ziploc with a wet paper towel and place the bundle in a shady spot for a great parallel investigation.
- Sprinkle seeds: Poke holes with a pencil tip. Then, drop seeds into the holes. Put a little more soil on top. Mark the pots so you can track the seedlings, if you have different types of seeds.
- Give water and warmth: Seeds need water, air and warmth to germinate. Place them in a spot with plenty of sunlight, and keep the soil moist but not soggy by adding small amounts of water often. Such a small amount of soil gains and loses water quickly!
- Observe and notice: Visit the plants once a day or so to care for and observe them. Waiting for those first noticeable bits of green to show up is a great exercise in patience—and when it happens, what a thrill!
- Notice: Learn just by observing and talking together about what you see and how your seedlings change over the days. Look at the differences between the simple “seed” leaf or leaves (known as cotyledons) and the “true” leaves of the plant that follow. Pull out a seedling or two to observe both its root and its shoot.
- Document: Draw or photograph what you notice each day, so you can go back to look at the change over time.
- Measure: Do not expect wee ones to understand standard measurement, but model measuring how many centimeters tall your seedlings are and talk about it with your child, sharing your excitement and interest in this information. If your child is interested in return, find out how many centimeters tall your child is too!
- Transplant your seedlings: If you would like to keep growing your seedings, wait until they have several weeks of growth, then either transplant them to larger indoor pots or start to prepare them for planting outdoors.
- Acclimating seedlings: If your seedlings have grown up indoors, start to put the pots outdoors for long periods of time for a few days, avoiding rough weather days. This will prepare them for successful planting in their new outdoor home.
- Thin out your seedlings: If you have many seedlings growing right next to one another, you need to gently pull seedlings so that a only a few remain with the space they need to thrive. It can seem hard to pull seedlings, but it is actually a great way to observe the full seedling, and you can still use the pulled seedlings to observe how the plants in our world that do not survive change and turn back into soil.
- If all seedlings peter out: You have learned so much just in the planting, sprouting and observing. Plus, you really can’t feel badly. Such a tiny fraction of the seeds that plants produce actually sprout, never mind survive the bumps of early life to thrive as a plant. It’s the way nature is designed, and it may actually help you and your kids care for the plants around us even more to realize what a rare thing it was for each of them to make it. Finally, a lesson in composting is a fine way to close this exploration, which is hopefully the first of many times you’ll plant and learn from seeds!
- Harvest and taste the seedlings or the leaves of the plants, if edible.
- Try this fruit seed investigation from Scientific American’s Science Buddies series.
- Connect to literature by reading books like Carrot Seed by Ruth Krauss, The Tiny Seed by Eric Carle, or How Groundhog’s Garden Grew by Lynned Cherry.
- Try again with a new variety of seeds!
Why is this activity great for kids?
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