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.

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

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

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

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.

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.

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

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.

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

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

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

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

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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.

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

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

This is a quick, easy science fair project that conveys the idea of density to upper elementary students.

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.

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

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

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

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

This science fair project idea observes products available in the school cafeteria and waste produced by these products.

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

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