DIY Crystal Garden

Grow colorful crystal formations using bluing, salt, and ammonia on a porous base. A classic science-fair style project with a wow factor.

STEMEducational
AgeAges 8–12
Duration45 min
DifficultyMedium
CostLow
LocationIndoor

Educational Value

Introduces crystal growth and patience in scientific observation.

Materials Needed

Prep progress

Step-by-Step Instructions

  1. 1

    Place coal or sponge in a shallow dish.

  2. 2

    Mix bluing, salt, ammonia, and water; pour over base.

  3. 3

    Add drops of food coloring in different spots.

  4. 4

    Crystals form over hours to days; observe daily.

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