Marigold’s younger brother who is bright and curious; he believes their new house is haunted and shows loyalty to Marigold through shared adventures and protectiveness.

Alec's 10-year-old daughter and Marigold's stepsister; initially an antagonist, she is a complex character who deals with trauma and secretly helps individuals within the community.

A high-school junior and resident of Maplewood with an interest in gardening; he forms a complicated relationship with Marigold, reflecting both empathy and disagreement.

A community figure who once refused to sell her home, leading to conflict; she resides secretly in Marigold’s house and contributes to mysterious events in the narrative.

Carmen’s son, who is falsely portrayed negatively by the community's narrative but later seen in a more sympathetic light as he works to rectify the past.

Leader of the Sterling Foundation; he plays a critical role in the narrative's exploration of gentrification and is involved in deepening community tensions.

A Black writer and devoted mother to Marigold and Sammy; she moves the family to Cedarville for a residency and navigates the challenges of a blended family.

Piper’s father and Marigold's stepfather; a white financial analyst striving for family unity while managing internal biases and misunderstandings.