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

This science fair project explores how osmotic pressure forces water through the root up into the 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 science fair project idea explores whether talking to a plant will help it grow.

Encourage your child to take ownership of a plant by creating a care plan and following it over the course of a couple of weeks.

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.

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

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

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

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.

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

Tu B'Shevat is a Jewish holiday during which the "new year" for trees is celebrated. In this activity your child will paint a pot to grow his own plant.

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

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Test whether plants can grow without sunlight and water.

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

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

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.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

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

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.

Try hammering some plants with your kids to teach them a valuable lesson in flower science while making beautiful artwork in the process!

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

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

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.

Your child can re-use and re-purpose old seeds and paper into something new: decorated paper that can be planted!