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Botany Science Fair Project

Do Plants Grow Better in Water or Soil?

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Do Plants Grow Better in Water or Soil? | Science Fair Projects | STEM Projects
Are you curious to know if plants grow better in water or soil? This experiment will help you find out! You will compare the growth of plants in water and soil to see which environment is better for them.

Hypothesis

The hypothesis is that the vegetables will grow better in water, the flowers will grow better in soil, and the grass will grow equally well in both.

Method & Materials

You will plant different types of seeds in soil and water, water them regularly, and measure the growth of the plants over five weeks.
You will need radish, cucumber, snapdragon, Batchler’s Button, and lawn grass seeds, plastic cups, potting soil, water, and sand.

Results

The results of the experiment showed that the vegetables didn't grow better in water, the flowers grew better in soil, and the grass grew much better in soil. This experiment has shown that soil is the better environment for plants to grow in.

Why do this project?

This science project is interesting because it helps gardeners know how to grow their plants healthier, taller, and faster.

Also Consider

Experiment variations to consider include adding fertilizer to the water and soil to see if the plants grow equally well in both environments, or testing different types of soil to see which one is best for plant growth.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

Related video

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