Rescuing Mexican Pinguicula After Fungicide Damage in a Terrarium

A hobbyist wrote in about their Mexican Pinguicula terrarium that developed mold. After researching online, they applied Daconil fungicide to the soil surface with a paper towel, believing it was safe for carnivorous plants. They also increased lighting and maintained good airflow. Soon after, two previously thriving plants began wilting—only the leaves touching the soil were affected, while new growth in the centers remained healthy. The grower then discovered that no fungicide is considered safe for Pinguicula and asked whether the plants could recover.

Expert Dan Bowen responded with sympathy and practical advice. He recommended gently rinsing the affected plants with a small amount of distilled water poured over the top to help flush any residual fungicide. He also suggested slightly increasing airflow and reducing light intensity if needed. Bowen encouraged the grower to share photos for a more precise diagnosis and reminded them that setbacks like this are common in the hobby. With careful attention—avoiding further chemical exposure, maintaining pure water, and stable conditions—the plants have a good chance of recovery, especially since the growing points are still active.

Key takeaways: Never apply fungicides directly to Pinguicula or their soil. If accidental exposure occurs, flush with distilled water, optimize airflow and light, and monitor new growth. Patience and clean cultivation practices are the best remedies.