Bigroot Geranium plant profile
Geranium macrorrhizum
A perennial flower for full sun.
Last updated .
When to plant
When to plant Bigroot Geranium
Bigroot geranium is a semi-evergreen groundcover perennial; Cornell says to divide it in the spring or take cuttings of the rhizomatous roots, and to leave the evergreen foliage over winter and clean up the plant in spring. Spring is the practical planting and dividing window.
The calendar shows this cited seasonal window as an approximate band. It does not convert the season into frost-adjusted dates.
Open Bigroot Geranium in my garden calendarShows the source-backed planting season, not frost-adjusted dates.
Growing conditions
- Sun
- Full sun
- Lifecycle
- Perennial
- Hardiness
- Zones 3 to 8Find my hardiness zone
Next steps
Continue with Bigroot Geranium
Evidence trail
Evidence behind this profile
Original extension and institutional publications behind the planting, care, and safety facts on this page.
- Growing Guide: Geranium, Bigroot (Geranium macrorrhizum)
Cornell University, Department of Horticulture (Home Gardening, Flower Growing Guides). Supports general reference. Checked 2026-06-18.