What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

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

Help your fifth grader embrace the roots--literally--of Mother's Day by growing carnations to honor mothers in you family's history.

Help your fifth grader trace your family's roots and interview all the living mothers to create a makeshift, 3-D family tree!

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Do this activity to help your kids see how seeds contain "baby" versions of big plant stems, roots, and leaves.

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

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

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

Using a glass fishbowl, you and your kids can create a low-humidity, open-topped terrarium perfect for easy care, drought-tolerant succulents.

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

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.

Kids grow sunflower greens from seeds for a hands-on gardening experience in this kindergarten life science activity.

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

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

Demonstrate the capillary function in plants by adding food coloring to glasses of water. Slice stalks of celery and leafy tops. Compare color of leaves

Explore the role of starches as thickening agents in food, and learn about the chemical properties of starch in the process.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

In this hands-on activity, kids learn what it takes to foster seedlings into full-grown plants, all in a regular old soda bottle!

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

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

Using scherenschnitte, your science-savvy second grader will be able to create and display each part of a vegetable!

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.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

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

Jazz up your patio or backyard with hip and quirky planters made from simple Mason jars.

This science fair project determines if the allelopathic chemical produced by the black walnut tree biodegrades immediately or persists over several days.