
Allelopathy: Do Some Plants Inhibit Growth of Others Science Project
Investigate the allelopathic effects of certain plants on the growth of others. Conduct experiments to observe the relationships between different species!
This project involves creating a simple maze to observe how plants grow and navigate towards light, demonstrating phototropism in action.

If a plant is placed in a maze with a single light source, then it will grow towards the light source.
As an Amazon Associate, this site earns from qualifying purchases.
Step 1: Fill plastic cups with potting soil and plant one seed in each.
Step 2: Cut openings in the shoe boxes to create a maze pathway.
Step 3: Line the inside of the boxes with aluminum foil to reflect light.
Step 4: Place the planted cups at the start of each maze.
Step 5: Position a lamp at the maze exit.
Step 6: Turn on the lamp for 6 hours daily, ensuring consistent light.
Step 7: Observe and document plant growth daily.
Step 8: After two weeks, assess how many plants reached the maze exit.
Plants are likely to grow towards the light source, demonstrating phototropism as they navigate through the maze.
Light source position
Growth direction of the plants
Type of plant, Watering schedule, Soil type
Ensure the lamp does not overheat and cause a fire hazard.
Create a video of the plants growing through the maze.
Use diagrams to explain phototropism.
Show a time-lapse of daily plant growth.
Phototropism is the growth of a plant in response to light direction.
Aluminum foil reflects light, directing it through the maze.
Try adding more turns or covering parts to block light.