Answer: Most roses last only 7-10 days before they start to lose their petals so what you describe can be perfectly normal. When the roses are spent, cut the flower and the stem down to a 5-leaflet leaf. New flowering stems will grow and you'll have roses off and on all summer long. Roses need a deep soaking once a week in the Pacific Northwest. Flood the soil, allow to drain, then flood it a second time. This should penetrate the soil deeply and saturate the root mass.
Best wishes with your roses!
Q&A Library Searching Tips