What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

Examine the impact of insecticides on plant growth.

Check out this cool science project idea to explore how temperature creates annual rhythms that govern plant growth.

Bring the fun of gardening indoors! By stuffing a simple pair of pantyhose with a few grass seeds on top, your child can grow her very own plant pet.

In this plant habitats activity, children play the role of an ecologist and take surveys of different areas to discover the best habitat for dandelions.

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

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

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

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

Teach your child about recycling and gardening as she re-uses an empty plastic milk gallon jug to craft a swan-shaped plant container!

The goal of this middle school science fair project is to examine the effect of caffeine on plant growth.

When the wind starts blowing, you and your child can plant a sponge garden in the comfort of your own kitchen. Here's how:

How does light affect plant growth? Do different colors of light work better than others? Find out in this classic science fair project idea.

Here's a great early reading and science activity for curious children. Learn how to plant your child's name in seeds for a growing writing activity!

Children learn the six parts of a plant...but do they really understand? Try this plant-themed meal plan to bring school science into the home.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

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

This experiment works due to a simple principle: plants need light. Build a shoebox maze and watch the plant work though the obstacle course, searching for sun.

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

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

Ethanol can be used as an alternative fuel! The purpose of this experiment is to identify a starch plant that produces the largest quantity of ethanol.

Culverts transport seeds away from their original location to different places. This science project examines the effect of culverts on plant growth in streams.

The purpose of this science project is to determine which stimulus, gravity or water, will cause the greatest growth response in a plant.

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

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 plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

This first grade science activity is great for winter! Your child will grow and observe her own amaryllis bulb, keeping a journal of her scientific findings.