When to Plant Marshmallow in Zone 5
In USDA zone 5, start seeds indoors around March 10, transplant or plant outdoors May 19 to September 16, and expect your first harvest around September 16.
Marshmallow planting calendar for USDA Zone 5
Start seeds indoors
Mar 10
Transplant outdoors
May 19
Projected first harvest
Sep 16
Marshmallow is ready to harvest in about 120 days. Dates use USDA zone 5a average frost dates. Set your ZIP in HomeSown for dates tuned to your exact location.
What zone 5 means for marshmallow
Average last spring frost
May 5
Average first fall frost
October 1
Those two dates are what set the schedule above. Zone 5 gives you roughly 149 frost-free days, and marshmallow need about 120 days to mature.
Varieties to grow
1 variety of marshmallow in the HomeSown library. Tap any for its full grow guide.
Common problems with marshmallow
What to watch for, with identification and treatment for each
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