5 Pests Every Hydroponic Grower Should Know

According to a recent guide from Grow With Hydroponics, many hydroponic crop losses are caused by common greenhouse and indoor farming pests, which leave behind damage and symptoms that often mirror those of nutrient deficiencies, plant stress, or root diseases. Therefore, accurate and early hydroponic pest identification is critical to ensuring the success of modern CEA systems.

The Challenges of Identifying Hydroponic Pests

Hydroponics systems are often circular, meaning everything is connected. This has many production benefits, such as energy efficiency, but that makes it difficult to establish a root cause or patient zero when a disease, nutrient, or pest problem occurs. Additionally, unlike with outdoor crops, there is no seasonal reset where the plants (and any pest problems they might have) die in the winter. Instead, indoor hydroponics systems run year-round, allowing pest populations to continuously build and spread.

Five Pests Every Hydroponic Grower Should Know

The guide identifies spider mites, aphids, thrips, fungus gnats, and whiteflies as the most damaging pests commonly found in hydroponic systems, with each pest leaving telltale signs to help growers distinguish their presence from nutrient and environmental problems.

• Spider mites leave behind fine, silky webbing and stippled (tiny pinprick dots) damage on leaves.
• Aphids coat leaves and growing surfaces with honeydew that promotes mold growth.
• Thrips produce silver and brown streaks on their feeding locations and leave behind black fecal deposits.
• Fungus gnats damage root systems and target moist growing media substrates.
• Whiteflies congregate in clouds at canopy level and produce yellow stippling (similar to thrips) and honeydew deposits (like aphids).

For more, continue reading for a hydroponic pest prevention checklist at CEAgWorld.com.