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

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

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

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

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

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

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

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

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

This science fair project idea demonstrates that plants give off water.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

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

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

Plants and light seem to be good buddies, but how far does the friendship really go?

Do you think heat can affect a plant's growth rate?

Test whether plants can grow without sunlight and water.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

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

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

The objective of this science project is to determine the length of time for different seeds to germinate.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

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

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.