Watermelon Slime Recipe

It’s a favorite during the summer, it’s red, juicy and oh so sweet…that’s right watermelon is the perfect way to enjoy a hot summer day.  This refreshing fruit doesn’t keep summer boredom away, but I’m quite certain that this fun, sweet smelling watermelon slime recipe is just the thing you need for an afternoon of summer fun.

We’ve reached that point in the summer that it’s hot, hot, hot outside and even the pool doesn’t offer much relief.  So we’ve been spending more time indoors during the heat of the day, but my kids are definitely starting to feel the summer boredom blues.  Like everyone else they have been wrapped up in the slime crazy and we’ve made our fair share of slime over the past few months.  However, recently while they were searching for something to do they stumbled on these Floracraft Foam Slime Ballz I’d tucked away in the craft closet.  At the time I had been working on a few projects for National Watermelon Day and inspiration struck…let’s use these foam balls and make watermelon slime.


I wasn’t sure how this craft project would turn out, but the results were better than I could have expected and my kids had so much fun playing with this watermelon slime and spent a good portion of the afternoon pretending and playing with this gooey experiment.  

What You Will Need: 

  • 1/2 cup clear glue
  • 1/2 cup water
  • 1-2 teaspoons baking soda
  • 1-2 Tablespoons contact solution
  • 1 Tablespoon watermelon flavored Jell-o
  • Pink and red food coloring 
  • Floracraft Foam Slime Ballz
  • Black craft paint
  • Storage container
  • Green craft paint
  • Paint brush
  • Large mixing bowl 

Step 1: 

Pour a little bit of black craft paint in the bottom of a disposable container.  

Step 2: 

Add the Floracraft Foam Slime Ballz to the container and gently mix until they are coated in the black paint.  Spread out a piece of wax paper and dump the foam balls onto the wax paper and spread them out so they can dry.

Step 3: 

Pour 1/2 cup clear glue into a large mixing bowl.

Step 4: 

Add 1/2 cup of water and gently mix to incorporate these two ingredients.

Step 5: 

Next, add the baking soda, watermelon flavored Jell-o and the contact solution. Start mixing the ingredients until they are all incorporated.

Step 6:

Add 2-3 drops of pink food coloring and 1-2 drops of the red food coloring.

Step 7: 

Now begin to knead and mix the slime until it is no longer sticky.  Note: if your slime mixture is too sticky add a few drops of contact solution and continue to knead until it no longer sticks to your hands.

Step 8: 

Now it’s time to add the “seeds” to your watermelon slime.  Dump the black Floracraft Foam Slime Ballz to into the red tinted slime and mix together.

Step 9: 

Once we had this fun summertime slime recipe made we thought it would be fun to paint our storage container to look like the outside of a watermelon.  I poured a few different shades into my paint tray and painted the entire outside of the container with a light green base color.

Step 10: 

Once the base coat on the container was dry I used a darker shade of green to paint on the stripes and accented them with a yellow-green to give it a “just ripe feel.”

Once the container is completely dry add the watermelon slime to the container and seal it up until the next time your kids need a sweet summertime pick-me-up.  

While making slime isn’t a new concept, we’ve been making this awesome glow-in-the-dark slime for years, there are a few things we really loved about this slime recipe.  I love the smell of this stuff, it reminds me of summertime and my favorite watermelon candy.  The painted foam balls add an interesting component to the slime with their fun, popping texture. And, finally the hand painted watermelon container help take this ordinary slime and make it extraordinary.


With National Watermelon Day coming up on August 3rd this is the perfect time to give this gooey, sweet smelling slime recipe a try.  Make sure you also check out these these 25 cool watermelon crafts and 20 watermelon themed party ideas.

What types of slime have you and your kids made lately?

Mariah Leeson is the creative mind behind www.gigglesgalore.net. With a passion for celebrating, Mariah created Giggles Galore to inspire families to celebrate life’s little moments with creative, budget friendly ideas. She loves cooking, reading, crafting, hosting parties and most of all spending time giggling with her family.

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  1. Bethany Mcintyre says:

    That looks like so much fun. My kids are addicted to slime. We will have to try this out.

  2. Oh my goodness! My girls would go crazy for this. Slim making is all the crazy right now and this is just adorable. Thanks for sharing.

  3. Thank you for this! My kids will love this. They are all about slime!

  4. How adorable! Great tutorial!

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