What is the setting of Red Lily by Nora Roberts?

"Red Lily: In The Garden Trilogy" by Nora Roberts takes place on an estate with beautiful grounds. The ghost haunts the house and is seen walking to the carriage house. Eventually she appears in the carriage house, wreaking havoc. There is a nursery nearby where the main characters work. The Bride doesn't go there so Hayley has a place of respite.