In the side fic "Baby Steps" where Sephiroth comes home to Cissnei sleeping with their son clutched in her arms. When he tries to pick the boy up, she starts stirring with some bad dream, but calms down as soon as she hears Seph's voice.
Sephiroth encouraging Aerith after they reach Icicle Inn and discover an indoor garden where her mother had entire bushes of roses growing, causing her to start having feelings of deep inadequacy, considering her own flowers to be barely more than weeds. he points out that her flowers are ultimately far more resilient than the rose bushes, concluding that this isn't a world where roses can thrive, "but maybe wildflowers can."