I have lots of roses in my garden and they were either bare roots from our local market (which is where my Dad used to buy his) or reduced plants from the garden centre sale. Roses are very tough once established and survive very well in my dry, south facing garden. However, they are hungry plants and need feeding. What I do (as per my Dad's teaching) is to dig a big enough hole to start with, add plenty of garden compost which will help hold water and keep the roots moist and add a handful of blood, fish and bone which will feed the plants. Newly planted roses should be watered regularly until they establish a strong root system. Then, every March after cutting them back I feed with Westlands rose food with added manure and I get lots of beautiful blooms. Gardening experts recommend feeding again in the summer to give them another boost but sometimes I don't have time for that. If you have particularly fertile soil they will probably do well without feeding. New roses need watering until they are established, but older shrubs are fairly tolerant of dry soil for short periods, Afterall they originated in the Middle East. If your roses get blackspot or other diseases it's usually because they are under stress so check you are giving them what they need. Hope this helps.