Geranium

Use our zone-based planting guide to know when to plant geranium.

Plant name Zone Start seeds indoors (spring/fall) Start seeds outdoors (spring/fall) Plant seedlings/transplants outdoors (spring/fall) Plant spacing # plants per person
Geranium 3a Feb. 1-15 Not recommended On/around May 15 (after last frost) 6-36 inches (depending on variety) n/a
Geranium 3b Feb. 1-15 Not recommended On/around May 15 (after last frost) 6-36 inches (depending on variety) n/a
Geranium 4a Feb. 1-15 Not recommended On/around May 15 (after last frost) 6-36 inches (depending on variety) n/a
Geranium 4b Feb. 1-15 Not recommended On/around May 15 (after last frost) 6-36 inches (depending on variety) n/a
Geranium 5a Jan. 1-15 Not recommended On/around April 15 (after last frost) 6-36 inches (depending on variety) n/a
Geranium 5b Jan. 1-15 Not recommended On/around April 15 (after last frost) 6-36 inches (depending on variety) n/a
Geranium 6a Jan. 1-15 Not recommended On/around April 15 (after last frost) 6-36 inches (depending on variety) n/a
Geranium 6b Jan. 1-15 Not recommended On/around April 15 (after last frost) 6-36 inches (depending on variety) n/a
Geranium 7a Jan. 1-15 Not recommended On/around April 15 (after last frost) 6-36 inches (depending on variety) n/a
Geranium 7b Jan. 1-15 Not recommended On/around April 15 (after last frost) 6-36 inches (depending on variety) n/a
Geranium 8a Dec. 1-15 Not recommended On/around March 15 (after last frost) 6-36 inches (depending on variety) n/a
Geranium 8b Dec. 1-15 Not recommended On/around March 15 (after last frost) 6-36 inches (depending on variety) n/a
Geranium 9a Nov. 1-15 Not recommended On/around Feb. 15 (after last frost) 6-36 inches (depending on variety) n/a
Geranium 9b Nov. 1-15 Not recommended On/around Feb. 15 (after last frost) 6-36 inches (depending on variety) n/a
Geranium 10a 12-14 weeks before planting outdoors Not recommended year-round 6-36 inches (depending on variety) n/a
Geranium 10b 12-14 weeks before planting outdoors Not recommended year-round 6-36 inches (depending on variety) n/a
Geranium 11a 12-14 weeks before planting outdoors Not recommended year-round 6-36 inches (depending on variety) n/a
Geranium 11b 12-14 weeks before planting outdoors Not recommended year-round 6-36 inches (depending on variety) n/a

* Can be grown as a perennial in Zones 10-11. Can be started indoors, but are slow to grow so start 12-14 weeks before the average last frost date.