There is a hedge of Red Knockout shrub rose that runs all the way down the east side of my back yard. It grows like crazy and is tough as a boot. Once it is established it requires no care other than to be topped off once a year when it gets higher than my 6 foot wooden fence. It blooms continuously from mid April until frost in late October or November. I planted these about 5 summers ago and am more than pleased with them. Since then I see that there are now more varieties in different colors, but that's OK. Mine have a 5 year head start.