Perennial Dividing (Spring or Fall) Leave a Comment / By David Starr / March 1, 2025 When March 1, 2025 - June 30, 2025 12:00 am Add To Calendar Download ICS Google Calendar iCalendar Office 365 Outlook Live Event Type Discretionary Divide overgrown perennials like hostas, daylilies, or ornamental grasses.