I received a bouquet of pink roses for my Bday on 5/27 and today I noticed new growth on the stems. These roses have held out for 13 days already without hanging their heads or losing their petals which is pretty long I think. Can these stems be rooted to create new plants? What could I expect as far as rose type?
I would certainly try to root them. I gather from what you say that there is no root growth yet, but it seems to be a good candidate. The resulting rose will essentially be a clone of the one you were given.
Florists roses are very likely Hybrid teas and possibly difficult to propagate. I think there are detailed instructions for rooting roses in a Sticky, but I would give the stem a fresh cut and possibly score the "bark" vertically above the cut, cut off the very top, the spent bloom, dip the bottom inch or two of the stem in a rooting hormone and plant it in soil. I usually cover my cuttings with a mini-greenhouse made from a big plastic bottle with the bottom cut out - helps keep it moist. Place it in indirect light and watch for new growth which usually signals rooting. As yours already has new growth and no roots, I don't know... Good luck! Hopefully others with greater experience will offer more advice.