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

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

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

Examine the influence of the phase of the moon on moisture capillarity in garden soil. Measure and record the depth at which water is first detected.

Science fair project that determines whether spreading a moss soup over an area increases moss growth.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

Determine whether carpet placed on a lawn will kill grass and weeds. Choose an area of lawn that you would like to remove, record grass that is dead or dying.

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

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

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

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

This science project teaches students about organic farming and the benefits and disadvantages of commercial plant food.

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

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

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

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.

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

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

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Science fair project in which you will graft branches from different fruit tree onto a root stalk.

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 wireless networks damage living plants. Are WiFi radiation hazardous to your health?

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

In this science fair project, students examine how the flow rate in a stream affects the growth of aquatic plants.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

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

This science fair project examines how seeds hitchhike on animals and clothing.