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Botany Science Fair Project

Tea Leaves as Rose Plant Fertilizer

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Tea Leaves as Rose Plant Fertilizer | Science Fair Projects | STEM Projects
Can used tea leaves help rose plants grow faster? Tea leaves contain nutrients that break down in soil. This project tests whether mixing them into potting soil makes a difference. You divide ten rose plants into two groups of five. One group grows in plain soil. The other grows in soil mixed with used tea leaves at a 2:1 ratio. You measure the average height each week for four weeks. By the end, you compare the growth rates to see if tea leaves worked as a fertilizer.

Hypothesis

The hypothesis is that rose plants planted in soil containing tea leaves will grow more quickly.

Method & Materials

You will separate 10 rose plants into two groups of 5 pots each. One group will have soil mixed with tea leaves, and the other group will have soil without tea leaves. You will measure the height of the plants every week for 4 weeks.
You will need 10 potted rose plants, used tea leaves, a ruler, gardening utensils, water, and a black marker pen.

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Results

The results showed that the plants that were planted in soil mixed with used tea leaves, grew at a faster rate over the 4 weeks. This proves that the hypothesis is true.

Why do this project?

This science project is interesting because it shows how something as simple as tea leaves can be used to enhance plant growth.

Also Consider

Consider repeating the experiment using different types of plants, or using grounded coffee instead of tea leaves.

Full project details

Additional information and source material for this project are available below.

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