Procurement of Yucca, a Biological Plant for a Research Study in Water Treatment?

Ammonia contamination in water and its removal is a big concern of environment in today's world.

I am working on ammonia removal techniques in water treatment. Currently, on a special Turkish Zeolite Clinoptilolite along with Zeolite 4A.

I am in need of a biological material Yucca which have been found by some researchers helpful in ammonia control.

Can any friend help me to provide this material Yucca as I  am not able to get it in my country. 

Regards,
Lokesh Kumar, Chartered Chemist
Delhi Jal Board 
E-mail: lokeshdjb@gmail. com