• Common Name : Wal Kottamalli

• Scientific Name : Scoparia dulcis

• Family : Scrophulariaceae

• Life cycle : Annual

• Place of collected : Home garden Gampaha

• Date of collected : 2009.08.12

• Morphological characters : ranging from 30 to 100 cm in height, with a strong taproot ; stem and branches flattened at the extremities, fibrous, almost woody at times; leaves : alternate, slender, lanceolate, acute, margins toothed, 2 – 3 cm or more long flowers : light yellow, with a shallow notch at the apex fruit : a capsule, 2 mm in diameter, rough, consisting of five to eight (rarely more) carpels which break at maturity into equal, one-seeded, segments (mericarp)

• Propagation : seeds

• Agricultural importance: Compete with crops for nutrition, water and solar radiation.

• Uses : Have medicinal valve in ayurvedik medicine.

• Control measures : Mechanical methods hand picking and burning.