Round-leaved sundew

The round-leaved sundew (Drosera rotundifolia) is a unique carnivorous plant belonging to the Droseraceae family. In a specialized agricultural context, it is cultivated for pharmaceutical research and production, requiring precise control over its microenvironment to maintain health and vigor.

Its natural range encompasses large areas of the Northern Hemisphere, where it thrives in nutrient-poor, acidic, and waterlogged environments such as peat bogs and marshes. Cultivation efforts focus on replicating these conditions to ensure the plant can survive without the nutrient density found in standard garden soil.

Botanically, the species is defined by its basal rosette of glandular leaves. These leaves are covered in sticky, dew-like tentacles that trap and digest small insects. This specialized evolution allows the plant to flourish in nitrogen-deficient soil, making it a subject of fascination for both botanists and commercial growers.

Agricultural requirements are strict: the growing medium must consist of sphagnum peat moss with high acidity. It is critical to use only distilled or rainwater, as municipal water contains minerals that are toxic to the plant's delicate root system. Furthermore, high humidity and direct, bright sunlight are essential for effective photosynthesis and trap production.

• Requires highly acidic peat substrate.
• Irrigation with distilled water only.
• High humidity levels (60–80%).
• Bright, indirect to direct sunlight.

The primary economic use is medicinal, as the plant contains compounds like plumbagin, which have antitussive and antibiotic properties. While the plant is generally hardy, it can be susceptible to fungal infections in poorly ventilated spaces and may face pressure from pests like aphids if humidity management is inadequate.