This science fair project idea researches the effects of acid rain on plant growth.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

This science fair project idea explores whether talking to a plant will help it grow.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.

This science fair project idea investigates whether plants can survive being frozen.

This science fair project idea determines if the color of light affects the growth of plants.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Find out whether putting something on top of a plant will inhibit its growth.

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

This fun and easy middle school science fair project idea explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

This science fair project will help students learn about non-vascular plants, such as mosses.

Explore if planting seeds in a certain direction will affect how fast it germinates.

Can you plant the insect-attracting borage plant to increase the amount of beneficial insects in your garden? Find out in this experiment!

Help your child plant a "tea garden": a garden made of herbs for making teas.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.