Spanish Needle, a Typical Invasive Plant In Taiwan

posted May 9, 2012, 2:16 PM by Yung-tai Tu
Gallery: ( more photos)

English name

Spanish Needle

Scientific name

Bidens pilosa

Roles in local ecosystem

 Bidens pilosa may flower at any time of the year. Therefore, it is an important source of honey.

How do they threaten indigenous plants?  Why are they become so invasive?

 It has an effective means of seed dispersal , through which the plant has become a cosmopolitan weed in temperate-to-tropical regions.

Yung-tai Tu,
May 9, 2012, 2:48 PM