Rose of Sharon - Hibiscus syriacus

Rose of Sharon ( Hibiscus syriacus) are from a shrub and very common in the Southern  states of USA.The plants originally came from India and China.  The image on the left has single petals and a more common cultivar.  The stamen is clearlu visible.  The image on the right has double petals and the stamen is hidden.  I would really like to get a cutting of the image on the right or get seeds from my neighbor.
For more info:  http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c522