How much water does a rose need?
Roses need five gallons of water per week during the summer months. That is the equivilant of a bucketfull of water or one inch per week. Lack of water will make the rose roots go deeper looking for it and heavy watering promotes causes the roots to grow close to the surface which causes them to bake in the summer and freeze in the winter. Once a rose is mature (3years old) it is very drought resistant.