I only have the dens, but mine are almost all finished blooming recently or are still in bloom, some in re-spike. They are currently all growing. Don't have a root pic, but they are thinner than phal roots usually, about as thick or slightly thicker and more robust seeming (to me) than onc roots, velamen is more white than green or grey to me if they're healthy, they grow quickly so there is often a big green tip. Mine are all spatulatas (antelopes) or intermediates except for a spectabile and a pierrardi; the group they're in makes a difference- both in appearance and growth cycle. Phalananthe (the round phalaenopsis resembling ones often available at grocers etc.) grow and look vegetatively like the spatulatas I have.