To begin with, use the back of table knife to crack the egg ⅔ from the large end of the egg. Then use your fingers to remove the top, and empty the yolks into a bowl. If the opening isn't large enough, you can use your fingers to break off a little more of the shell to widen the hole and make it large enough for the bulb.
Rinse the egg shells with some water to clean to them off.
If your eggs have a date stamp on the shell, use some nail polish on a cotton ball to remove it.
Next, remove the grape hyacinths from the pots and slowly and carefully knock off as much dirt as you can, and use your fingers to untangle the roots and gently pull them apart. For the African violet for planting, remove it from the pot. Use your fingers to gently remove enough soil from the roots so that it's small enough to fit into the empty eggshells.
Now you're ready to plant the plants in the eggshell pots. Add a little of the soil that you removed from the pots earlier into the bottom of the eggshell. Add the plant into the egg planter, working carefully to make sure the roots are all tucked in. Fill in any spaces around the plant with more soil. For the grape hyacinth bulb you can use something small like a very small spoon, pencil or wooden skewer to help push the soil in around the bulb.
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Notes
Remove the date stamp on white eggs with some nail polish remover.Look for quail eggs in the egg section at the grocery store around Easter time. Or look at farm shops, or farmers' markets.Use the smallest grape hyacinth bulbs you can find for the quail eggs.Remember to water or mist your planted bulbs.Once the bulbs are done blooming, replant them in your flower beds for next year and compost the eggshells and soil.