The green rose (Rosa x odoratus 'Viridiflora') was a byproduct of hybrizations done in the 1840's on the way to developing hybrid tea roses. It is a cross between Rosa chinensis and Rosa gigantea. The flower consists of several rows of green bracts that take on a reddish tinge as they age. If you want a showy fragrant rose in your garden, this is not a good choice. It does make for a conversation piece. The plants reach about three feet tall. Since it is not fully hardy, we keep it in a container that is brought in for the winter.