Why Are My Flower Plants Turning Yellow?

When a flowering plant turns yellow, it is a signal that something is not right with it. With a little research you should be able to help it to overcome the yellowing problem so it can thrive.

Flowering plants sometimes turn yellow

Characteristics

Flowering plants are comprised of an underground root, and, above ground, a stem and leaves. The flowers, which is where the seeds develop, are the sexual reproductive organs of the plant.

Nutrients

The roots of a plant do a lot more than keep it anchored in the ground. Roots allow the plant to get nutrients from the soil. If the leaves of your flowering plant are turning yellow, the soil may be deficient in either nitrogen or iron. Too much fertilizer, on the other hand, can burn the leaves, turning them yellow.

Water

Too much water can choke the roots of your plant, causing it to turn yellow. On the other hand, if the plant needs more water the leaves will first turn yellow, then brown and, finally, drop to the ground.

Light

Not all flowering plants thrive in the sunshine. Some, like the hydrangea, prefer shade and will actually get sunburned if grown in the sun.

Disease

Stem rot, caused by a fungus, can make the lower leaves of your flowering plant turn yellow. Other diseases include leaf spot, wilt disease and rust.

Pests

Aphids and spider mites are common pests in the garden and will turn a flowering plant yellow.

References

• Introduction to Flowering Plants

Resources

• Diversity of Flowering Plants