Growing Sagitaria emersed

I recently bought a few Sagitaria plants, don't know the exact specie 
unfortunately. I've been wandering if I could grow them (partially) 
emersed as well. 


Jan Fidrmuc
CentER for Economic Research, Tilburg University, The Netherlands
P.O.Box 90153, 5000 LE Tilburg, phone: +31-13-466-8221, fax: +31-13-466-3066
Email: Fidrmuc at KUB_NL.