When I co-managed the Master Gardener greenhouse at Zilker, we gathered quite a few hard to come by old roses and made cuttings. We stuck the cuttings in small squares of floral foam soaked in water, and then planted them in flats. We had quite a success rate. But, we didn't leave them in the foam after they started growing roots. We carefully took the foam off and potted them up to larger pots. Im pretty sure we sold most of them in gallon pots during Zilkerfest.
The foam works for rooting, but you have to remember to take it off. I check now when I buy small pots of anything.
