Why Do Plants Turn Light Green?

Yellowing needles on a plant
••• plant 1 image by Irina Surikova from Fotolia.com

Leaves on plants can turn from green to light green or yellow for a number of reasons, many of which are related to the care of the plant. But certain diseases or insects can also cause plants leaves to change color.

Age

Yellowing vines in a leaf
••• Dew drops on a broad leaf - shot from underneath the leaf image by Undy from Fotolia.com

All leaves or needles on a plant, evergreen or not, will eventually grow old and fall off. If you notice a few leaves here and there turning light green or yellow, then that's usually the case.

Overwatering

Overwatering plants can cause loss of color.
••• watering plants image by david hughes from Fotolia.com

Overwatering a plant can cause leaves to turn pale green or yellow and then drop.

Moving Plant

Sometimes simply moving a plant can cause it stress. As the plant adjusts to its new place, it will make adjustments related to light and temperature. During this period the plant is likely to lose some of its color and leaves.

Temperature Changes

Place a thermometer near the plant to see check the air temperature.
••• temperature goes up image by Nataliya Litvinova from Fotolia.com

Shifts in temperature where the plant is can affect its color. If a plant is too hot or cold where it's located, its leaves may become lighter in color.

Nutrient Issues

Too much or too little fertilizer can drastically affect a plant. A nitrogen deficiency can also cause leaves to turn light green.

Insects and Disease

Aphids dining on a leaf
••• aphid & tulip image by joanna wnuk from Fotolia.com

Insects feeding on a plant, either on its leaves or its roots, can cause leaves to turn light green, as can diseases common to the plant.

Related Articles

The Definition of Necrosis in Plants
Venus Flytrap Science Projects
Plants That Contain Testosterone
Does Photosynthesis Occur at Night?
How Do Aloe Plants Reproduce?
Phototropism Experiments
Life Cycle of a Plant for Kindergarten
The Life Cycle of the Mullein Moth
Diet of a Leaf Insect
The Difference Between Flowers & Weeds
The Plant Life Cycle for Kids
Three Main Parts of a Seed
How to Explain the Life Cycle of a Plant
Does Mold Grow Faster in the Light or Dark?
Organelles Involved in Photosynthesis
What Are the Steps of Sexual Plant Reproduction?
Where Does Photosynthesis Take Place?
How to Turn a Negative Denominator into a Positive
How to Know If a Caterpillar in a Cocoon Is Dead
How Does the Sun Affect Plants?