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Using tea leaves to enhance plant growthFeatured science projectScience project video


The hypothesis that  rose plants planted in soil mixed with tea leaves will grow more quickly, is proven to be true.

Compost soil is known to be very good for plants but using compost made from tea leaves has been found to be even better for enhancing plant growth. The tea compost is known to provide many benefits to plants, especially  rose plants. The used tea leaves are also a rich source of antioxidants for the plants.

Also consider

Try to repeat the science fair project using different types of plants.

The science project experiment can be repeated using grounded coffee instead of tea leaves.


Used tealeaves -

Tea as fertilizer -

Compost tea – fertilizer and disease prevention -

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Complexity level:
Project cost ($):
Time required:
1 day to prepare, 28 days for science fair project
Material availability:
Easily found at a plant nursery
Safety concerns:

Basic safety requirements