Can You Grow Roses from a Bouquet
You can sometimes grow roses from a bouquet by rooting the cut stems as cuttings, but success is low — florist roses are often treated and hard to root. Take fresh, firm stems, use rooting hormone, and keep them humid.
It is possible to root a rose from a bouquet, though the odds are modest. Florist roses are bred for the vase rather than for rooting, and many have been treated with preservatives, so expect only a few of many attempts to succeed.
For the best chance, act while the stems are still fresh and firm. Cut a healthy stem into a six-inch length below a node, remove the flower and most leaves, dip the base in rooting hormone, and insert it into moist, gritty potting mix. Keep it humid under a clear cover in bright, indirect light. The same method is covered in full in our guide to growing roses from cuttings.