Not only does using eggshells as seedling pots give new meaning to one of the symbols of Easter, the egg, but it also helps draw a link to spring. With this activity, you can reuse shells as natural, nutrient-rich, biodegradable pots as well as the empty cartons to hold them. What’s more, gardening at school allows students to make observations about plant anatomy and make hypotheses.
For this activity, you’ll need:
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12 eggshells in good condition
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An empty egg carton that holds 12 eggs
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Vegetable, herb, or flower seeds (radish, pea, squash, melon, tomato, zucchini, sweet pea, nasturtium…). You can also get some free seeds (and maybe even borrow some gardening equipment) at one of Montreal’s public libraries. You can also see if a similar service is offered in your area
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Potting soil in a small container
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A teaspoon to put the potting soil in the eggshells
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A large needle
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A pencil or felt-tip pen
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A sprayer
Instructions:
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Poke a small hole into the bottom of each shell to allow water to drain out.
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Use the teaspoon to add potting soil to the shells.
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Plant one to three seeds per eggshell, depending on the size.
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Cover with potting soil (see the sowing depth recommended on your seed sachets).
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Put the eggshells back in the carton, which provides support.
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Spray them with water.
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Use the pencil or pen to write the name of the plant on the top of the shell.
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Place in a spot with light, and water them regularly with the sprayer to keep the soil moist. Don’t spray them too much.
Students can watch their seedlings grow. Later, you can transplant them if students want to plant them in a garden. To do this, gently break each shell and its inner membrane and place the seedlings in the ground, in a pot or in a window box.