Drive can be used around some shrubs. Use the pre-emergent like suggested above twice, and followup with spot sprays of Drive. If needed, use careful spot sprays of Roundup. You may need to cover the good plants with a plastic bag or tarp while you spray around the base. Do not dig out crabgrass. Cut the crabgrass plants off flush with a saw knife. The roots do not sprout, (much).
Just my opinion.