Can knockout roses be grown in pots successfully? How often should they be watered?
Yes they can be grown successfully in pots. Make sure you get large pots that have drainage holes in them as they do not like overly wet soils that stay too wet. The amount they should be watered depends on the climate where you are. Hotter days will make watering possibly an every day matter. Being it pots it is easy for them to get too dry much more quickly. I recommend buying a moisture meter and check the soils moisture frequently.