Chia Seed Lab

Ashley and Ineta

How does what we cover a pot with chia seeds with affect how tall the chia seeds grow within a two week period?

The purpose of doing this lab was to find the best/fastest way to grow a healthy chia seed. We wanted to know if taping in moisture and heat (Like research said) would drastically affect how fast the plant grew.

The Research and Reasoning Behind Our Lab

  • chia seeds are one of the easiest plants to grow which was nice for this experiment since we could see results fast
  • When planted right chia seeds will grow roots on the 3rd or 4th day.
  • It's proven that chia seeds grow the fastest when exposed to sun and have some type of covering over the plant to hold in the moisture and heat. We chose saran wrap because it was convenient and clear so we could see through it. We also found saran wrap to be the most convenient because it would not break when dropped and it was easy to remove
  • Even if they aren't covered, they still grow but not as fast
  • Other scientists also have covered Chia seeds with plastic cups or glass bowls and still gotten good results

Hypothesis and Variables

Hypothesis: Based on our research if we cover a pot with saran wrap, then the chia seeds that are covered with saran wrap will grow taller in a 2 week period because the material will hold moisture and heat in.

Independent variable: what we cover the pot with

Dependent variable: how tall the plant gets in a 2 week period, we identified it by measuring with a ruler in cm

Controlled variables: how much water and soil we put in the pot, how big the pot is, the amount of seeds in the pot

Extraneous variables: how much sunlight the plant gets based on the amount of sunlight outside, the temperature of the room itself

How we set up lab and what we took data in


  • 12 Chia seeds

  • Ruler

  • Water

  • 2 cups

  • Seran wrap

  • 1 cup of soil

  • marker

  • tape

  • measuring cup

  • Tablespoon


  1. put a piece of tape on each flower pot where it can easily be seen and write A and B with 1 letter on each flower pot

  2. Get pot A and place it on a flat surface then put 1 cup of soil in the pot

  3. dig 3 small holes with the circumference of about your pinky finger

  4. Place 2 chia seeds into each hole

  5. Cover the holes back in with the dirt in the flower pot

  6. Add 5 tablespoons of water to the cup

  7. Repeat steps 1-6 for pot B

  8. Once that is complete put a piece of saran wrap completely over the top of flower pot A. Make sure there is no open space.

  9. Leave cup B with nothing over the top of it

  10. Carefully pick up both cups and place them in a sunlit area where they can all get an even amount of sunlight

  11. everyday add 1 tablespoon of water to the soil and measure in cm the amount each plant has grown above the soil and record. (take meausrement of the tallest plant)

  12. Also make qualitative observations about cups A and B


Big image


The pot that had seran wrap on it(A) grew exactly 4.5 cm more than pot B. The plant with seran wrap grew up to 10.5 cm, and the one without ended up being 6 cm tall. At the end of the experiment, the soil in pot A was very soggy, it wasn't absorbing the water as quickly anymore. The plants were all droopy but had grown over 5 cm each. For some reason, in both pots, one plant grew much taller than the others.


A plant will grow faster if it has more heat and moisture. The plant without the seran wrap over it didn't grow as tall because it quickly absorbed moisture and had none left over. The plant with seran wrap over it had enough heat and moisture left over, especially over the weekend when no one was watering it, that it was able to continue growing even without being cared for.

If we could do this lab again, what would we change?

We would add less water because although the plants were absorbing it at first, towards the end of the experiment, it was too much water and it was making the plants droopy and the soil soggy. We might have also propped the plants up with a stick so they wouldn't fall over and bend. Last, we would have planted the seeds in a bigger pot because the roots would have more room to grow and the plants might have grown even taller and bigger.