You have Button bush information. What does that mean when my Button bush starts having yellow leaves? Thank you! Kristy.
Button Bush Question
Certified GKH Gardening Expert
Yellowing leaves generally indicate a watering issue. Either to much or to little.
Bottle Bush do need regular water so if it has been dry and with the summer heat it likely needs more water.
2 to 3 inches of hardwood mulch can help with moisture retention.
Here is a link to refresh you on the care requirements.