Irrigating Rose beds
Can anyone recommend a good way to irrigate a rose bed that's about 4' deep (front to back) and 30' long, keeping in mind that I don't want to get the structure behind the rose bed wet nor the foliage on the rose bushes (I know--picky, picky.) I've tried Rainbird's bubblers but they put out too much gpm and when I've reduced the gpm to about the right rate, the water just runs down the riser. I've also tried drip irrigation (which would be great), but the maintenance on it is ridiculous and impossible for me to keep up with. I'd like to water these roses in such a way that the ground around the plant gets uniformly watered but not too quickly.
Any ideas or experience to help me out? Thanks much!