Wedelia keatinii

Wedelia keatinii is a perennial herbaceous plant belonging to the Asteraceae family. This species is widely recognized in agriculture and environmental management for its aggressive growth habit and efficiency as a ground cover, providing effective soil stabilization in various climatic conditions.

Originating from the tropical regions of Southeast Asia, this plant has adapted to diverse environments, including open meadows and forest edges. Its range has expanded through horticultural practices, making it a reliable choice for landscaping projects in subtropical zones where ground stability and aesthetic uniformity are required.

Botanically, Wedelia keatinii is defined by its prostrate stems that develop roots at the nodes upon touching moist soil, allowing it to spread rapidly. The leaves are typically lanceolate with serrated margins, providing a dense foliage canopy that suppresses weeds. The plant produces vibrant yellow, daisy-like flowers that bloom consistently throughout the warmer months.

For optimal growth, the species requires fertile, well-draining soil and a location with full sun to partial shade. While it is relatively drought-tolerant once established, supplemental irrigation during extreme dry spells will maximize its coverage rate. Maintenance includes occasional pruning to manage spread and ensure the plant remains vigorous and healthy.

Main areas of application include:

• Soil erosion control on slopes and embankments;
• Extensive landscaping and ground cover in public parks;
• Use as green mulch to conserve soil moisture;
• Urban greening and sustainable habitat restoration.

The plant is generally resilient; however, it is susceptible to root rot if grown in waterlogged conditions. Pests are typically minimal, though aphids or mites may occur during periods of stress. Proper cultural practices, such as ensuring good air circulation and avoiding overhead irrigation in humid conditions, are usually sufficient to maintain a healthy stand of Wedelia.