I am in 8a Dallas but maybe this will give you an idea about Dulcis. I am a bit unhappy with its size so far but its also growing in terrible dirt/clay. It has yet to come up this spring so waiting to see what size I get this year. Hopefully I get at least 1.5 - 2 inch culms but to me this seems small after 3-4 yrs in the ground already.

Here is a link that might be useful: Boo

kevip711 - thanks for the pictures and input. The planting spot I have in mind has pretty good soil. The rubromarginata, nuda, and atrovaginata are adjacent to this spot and are all doing really well.

Anybody else have advise/experience/input? Thanks!

both are about equally hardy, the manii decora may be just slightly hardier, but not enough to really make a diference. having said that, the dulcis will produce fatter culms, and in less time, forming an open grove, the manii decora will probably end up a bit taller, with less thick culms but wil make a tighter grove.