Need a fun new project to celebrate St. Patrick’s Day? My kids loved this one! It even got them out of bed early to check out how their crystals grew. I was pretty impressed with how pretty they turned out, too!

Materials Needed

  • Borax – found in the laundry section ($1.00 to make about 10 shamrocks)
  • Green pipe cleaners
  • Boiling water
  • Green food coloring (optional)
  • Glass jars
  • Funnel
  • String
  • Pencils


  1. Measure ½ cup Borax into each glass jar. Make sure your kids know that Borax is NOT edible!
  2. Add 3 cups of boiling water to each jar and stir until dissolved.
  3. Add food coloring (optional). We experimented with differing amounts in each jar, but I’m not sure if it really changed the color of the crystals. The color you see is mainly from the pipe cleaner.
  4. Shape the pipe cleaners into shamrocks or other shapes for other holidays or events.
  5. Tie a string onto the shamrock and submerge it in the solution, making sure it’s completely covered and not touching the sides of the jar.
  6. Tie the string to a pencil to rest on the top of the jar. As the crystals form, the shamrocks get fairly heavy, so make sure the string is secure. We added a bit of tape to secure the string to the pencils.
  7. The crystals will start forming after several hours. For best results, wait overnight.
  8. When you wake up the next morning, you will be amazed at these lovely crystals you grew yourself!
Grow Your Own Shamrock Crystals!