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Botany Science Fair Project

Plant Growth: Hydroponics vs. Soil

Plant Growth: Hydroponics vs. Soil | Science Fair Projects | STEM Projects
Are you curious to know if plants can grow faster when grown hydroponically instead of in soil? In this experiment, you will find out if hydroponic gardening can substitute for normal gardening.


The hypothesis is that when growing leaves hydroponically, the roots will grow faster than the leaves in soil.

Method & Materials

You will set up three groups of plants, one in chemical solution, one in tap water, and one in soil. You will measure the root growth of the plants after two weeks.
You will need nine plastic 165 ml clear cups, nine plant shoots 10 cm long, one bottle of Shultz Plant Food Plus, one bag of potting soil, one designated room for growing, two Peperomia plants, and one portable tray.


The results of the experiment showed that the best growing plants were the plants growing in the hydroponic groups. The group with the smallest growth were the soil groups. This experiment showed that the hypothesis should be accepted because the hydroponic groups grew better than the soil groups.

Why do this project?

This science project is interesting because it can give scientists ideas on future experiments and help gardeners possibly grow stronger healthier plants.

Also Consider

Variations to consider include using different types of plants and conducting more tests in each group.

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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