Making sure the newly planted shrubs receive adequate watering while setting down roots can be more difficult in the warm summer months.
Keeping the roots cool and moist with a layer of hardwood mulch will help.
Watering should be daily during the first 2 weeks and then you can back off slightly, but will need to monitor the soil moisture carefully.
Maintain the watering schedule until the fall when plants began to go dormant.
Pruning can take place in the spring of any dead plant material.
Here is a link to refresh you on the care requirements.
Most reputable garden centers guarantee new shrubs for the first year.