Q.boxwood turning yellow
any plants medicine or pills to use inside soil to prevent buds? if yes, what is the name for it?
thank you so much.
Nicole

Yellowing of boxwood foliage could be attributed to different factors, soil fertility (fertilization), water management, frost damage, and the most serious is a fungal disease called "boxwood blight".
https://www.courierpostonline.com/story/life/2015/09/04/boxwood-blight/71720224/
https://www.nj.gov/agriculture/divisions/pi/pdf/BoxwoodBMP.pdf
It is impossible for us to diagnose the problem without photos and more information on the growing conditions and maintenance practices. There is no magic pill, treatment depends on accurate diagnosis.
We suggest that you contact the local Master Gardens through the county/university extension service and first rule out boxwood blight.
Rutgers master gardener in Essex County:
https://mgessex.org/