DIY / Home Improvement

Common Plant Diseases and How to Avoid Them


Many people own plants for pleasure, decoration, or to improve air quality. In fact, in 2020, 66% of Americans owned at least one plant.

Taking care of plants can be difficult, especially when disease sets in.

However, knowing about common plant diseases and how to treat them can bring your plant back to good health.

Keep reading to learn about different plant diseases and how to avoid them!

Black Spot

Black spot is one of the most common indoor plant diseases. This fungus forms small black dots, causing leaves to turn yellow and fall off. Usually, this fungus is found overtaking roses, fruits, and flowers.

This disease will weaken the plant, making them susceptible to other sicknesses. Overly moist foliage in cool weather is where this disease forms. Therefore, you must be environmentally aware of these plants for protection.

To avoid black spots, it’s essential to keep your plants in the sun, so their foliage dries quickly after watering. Also, try watering only the plant’s roots and spraying them with a preventive biofungicide.

Powdery Mildew

Powdery mildew is a plant disease named after its appearance. This disease looks like a dusty white coating was left all over the plant. It invades many different plants, fruits, and flowers.

Avoiding powdery mildew comes with ensuring your plants are not sitting in water. You can do this by providing them with adequate drainage and watering during warmer parts of the day.

Fusarium Wilt

Fusarium wilt is caused by fungus in the soil and is prominent during the summer. This disease is common in edible varieties like beans, peas, tomatoes, etc. The fungus will cause leaves to wilt, stunt growth, and root rot.

Since fusarium wilt is very damaging to plants, you must use disease-resistant cultivars for prevention. Should your plants become infected, destroy them, so there is no further spreading.


Damping-off is a disease in plants that is caused by the soil. A fungus develops in the ground due to wet and humid environments. This sickness targets seedlings, causing them to decay before they can sprout.

Conquering this disease starts by being proactive and keeping your soil clean. Clean soil can be maintained by changing and cleaning pots and providing adequate ventilation.


Plant disease identification is effortless when it comes to rust. This fungal infection leaves spots on stems and leaves that are rusty-colored. Sometimes, the color can change from orange to black, depending on the severity.

Rust attacks various plants, including grasses. To battle this disease, you can purchase fungicides for control. Also, be sure to remove any infected plants to avoid spreading.

The Most Common Plant Diseases

Each of these plant diseases poses a significant threat to their overall health.

Hopefully, this information will help you avoid their demise and keep them vibrant throughout the year.

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