Science tidings

The Ultimate Guide to Growing Crystals at Home

You might be surprised you can grow your crystals at home with just a few household items. Not only is it a fun and educational activity, but it can also yield beautiful results. This ultimate guide will walk you through the step-by-step process of growing crystals at home.


  • 1 cup of distilled water
  • 1/2 cup of table salt or Epsom salt (depending on the type of crystals you want to grow)
  • One glass jar
  • A piece of string or a pipe cleaner
  • A pencil or chopstick
  • A saucepan
  • Food coloring (optional)
  • A thermometer (optional)
growing crystals in the home

Procedure to create crystals

Ultimate science experiment guide to creating crystals at the home

Step 1: Heat the Water

Fill a saucepan with distilled water and heat it until it reaches 160 degrees Fahrenheit. You can use a thermometer to ensure the water is at the correct temperature. Heating the water removes impurities and helps the salt dissolve more easily.

Step 2: Add Salt

Add 1/2 cup of table salt or Epsom salt to the hot water and stir until it completely dissolves. If you want to add food coloring to your crystals, this is the time to do so. Stir until the color is evenly distributed.

Step 3: Pour Solution into a Glass Jar

Pour the salt solution into a clean glass jar. Ensure the jar is big enough to hold the solution and allow room for crystals to grow. If you want to grow larger crystals, use a larger jar.

Step 4: Attach the String

Tie a piece of string or a pipe cleaner around a pencil or chopstick. Place the pencil or chopstick across the top of the jar so that the string or pipe cleaner dangles down into the salt solution. Ensure the string or pipe cleaner is not touching the sides or bottom of the jar. This will serve as a seed for your crystals to grow on.

Step 5: Wait

Now comes the hard part – waiting! Crystals can take several hours to several days to form, depending on the temperature, humidity, and other environmental factors. Please make sure the jar is in a place where it won’t be disturbed and where the temperature is consistent. Check on the jar every few hours to see if crystals start forming.

Step 6: Remove the String

Once the crystals have grown to the desired size, carefully remove the string or pipe cleaner from the jar. You can use scissors to cut it if necessary. Be gentle to avoid damaging the crystals.

Step 7: Enjoy Your Crystals

Congratulations, you have successfully grown your crystals! You can display them in a jar or use them for science experiments. If you want to keep them for a more extended period of time, you can dissolve them in water and start the process over again.


  • If you want to grow different types of crystals, you can experiment with different types of salt, such as sea salt or Epsom salt.
  • Adding food coloring can give your crystals a unique and colorful look.
  • Use a larger jar and a longer string or pipe cleaner to grow larger crystals.
  • Make sure the jar is clean before adding the salt solution. Any impurities can interfere with crystal growth.
  • Patience is key when growing crystals. Don’t disturb the jar or the crystals while they are growing.

Video demonstrating growing crystals from various salts.

Choosing the salt for this experiment

There are several other substances that you can use to grow crystals at home, each with its own unique properties and characteristics. Some examples include:

  1. Borax – Borax is a naturally occurring mineral commonly used in laundry detergent. It can be dissolved in hot water to create a supersaturated solution and then used to grow crystals.
  2. Sugar – Sugar crystals can be grown by dissolving sugar in hot water and allowing the solution to cool slowly. Sugar crystals are typically clear or white and can grow quite large.
  3. Copper sulfate – Copper sulfate is a blue-colored salt that can be dissolved in water to create a supersaturated solution. It is commonly used to grow blue-colored crystals.
  4. Sodium chloride – Sodium chloride, also known as table salt, can be used to grow cubic-shaped crystals. It is dissolved in hot water and then allowed to cool slowly.
  5. Potassium nitrate is a salt commonly used in fertilizers and fireworks. It can be dissolved in hot water to create a supersaturated solution and then used to grow crystals.
  6. Epsom Salt
  7. Alum

Whether you should use Epsom salt or alum for your crystal growing experiment depends on your preference and what you want to achieve.

Epsom salt, also known as magnesium sulfate, is a readily available and inexpensive substance that can be used to grow crystals. Epsom salt crystals typically have a clear to white color and can grow quite large. They also tend to be more delicate and fragile than other crystals.

On the other hand, Alum is a hydrated form of potassium aluminum sulfate and a common ingredient in pickling and baking. Alum crystals are known for their translucent appearance and can be grown quite large as well. They are also typically more robust and durable than Epsom salt crystals.

Ultimately, the choice between Epsom salt and alum depends on your desired outcome and the specific experiment you are conducting. Epsom salt may be the better choice if you are looking for a more delicate and intricate crystal. Alum may be the way to go if you want a giant, more robust crystal.

These are just a few examples of the many substances that can be used to grow crystals at home. Each substance has its own unique properties and characteristics, so it’s worth experimenting with different materials to see which ones produce the best results for your desired outcome.


Crystals are a fascinating and beautiful example of solid-state matter. They are formed when molecules, ions, or atoms come together in a highly ordered, repeating pattern. The process of crystal formation is called crystallization, and it can occur in various ways. This guide will explore how to grow crystals at home using alum.

Alum is a hydrated form of potassium aluminum sulfate, a common ingredient in pickling and baking. When alum is dissolved in hot water, it creates a supersaturated solution, meaning there is more alum in the solution than it can normally hold. As the solution cools down, the excess alum molecules form a crystal lattice, the basis for crystal growth.

The key to growing crystals is to control the nucleation and growth process. Nucleation refers to the initial formation of a crystal from the dissolved molecules in the solution. Once nucleation occurs, the crystal starts to grow and expand over time. By controlling the rate of cooling, the size of the container, and the amount of alum used, it is possible to control the nucleation and growth process and create beautiful, well-formed crystals.

In addition to alum, many other substances can be used to grow crystals, each with its own unique properties and characteristics. By understanding the science behind crystal growth and experimenting with different substances, you can discover the joy and beauty of growing your own crystals at home.


In conclusion, growing crystals at home is a fun and educational activity that can be done with various substances. Whether you choose to use Epsom salt, alum, or one of the many other materials available, crystal growth offers an opportunity to explore the fascinating world of science and chemistry. Following the simple steps outlined in this guide, you can create beautiful and unique crystals that impress you. With the right materials and a little bit of patience, anyone can become a crystal-growing expert. So why not try it and see what amazing crystals you can create at home? Remember to use appropriate safety precautions and have fun!

Get the best posts in your inbox.

We don’t spam your inbox. 

By entering your email, you agree to receive emails from and agree to our privacy policy