When to Plant Wasabi in Montana
Montana spans USDA hardiness 3b to 6b (zones 3b to 6b on this page). Plant wasabi by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.
Jump to: Zone 3b · Zone 4a · Zone 4b · Zone 5a · Zone 5b · Zone 6a · Zone 6b
Wasabi planting calendar for Montana, Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
Direct sow
May 20
Projected first harvest
Oct 17
Wasabi is ready to harvest in about 150 days. Full zone 3 guide (both 3a and 3b) →
Wasabi planting calendar for Montana, Zone 4a
Average last spring frost
May 15
Average first fall frost
September 20
Direct sow
May 15
Projected first harvest
Oct 12
Wasabi is ready to harvest in about 150 days. Full zone 4 guide (both 4a and 4b) →
Wasabi planting calendar for Montana, Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
Direct sow
May 10
Projected first harvest
Oct 7
Wasabi is ready to harvest in about 150 days. Full zone 4 guide (both 4a and 4b) →
Wasabi planting calendar for Montana, Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
Direct sow
May 5
Projected first harvest
Oct 2
Wasabi is ready to harvest in about 150 days. Full zone 5 guide (both 5a and 5b) →
Wasabi planting calendar for Montana, Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
Direct sow
Apr 30
Projected first harvest
Sep 27
Wasabi is ready to harvest in about 150 days. Full zone 5 guide (both 5a and 5b) →
Wasabi planting calendar for Montana, Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
Direct sow
Apr 25
Projected first harvest
Sep 22
Wasabi is ready to harvest in about 150 days. Full zone 6 guide (both 6a and 6b) →
Wasabi planting calendar for Montana, Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
Direct sow
Apr 20
Projected first harvest
Sep 17
Wasabi is ready to harvest in about 150 days. Full zone 6 guide (both 6a and 6b) →
Not sure which half-zone you're in? Set your ZIP in HomeSown for dates tuned to your exact location.
Varieties to grow
1 variety of wasabi in the HomeSown library. Tap any for its full grow guide.
Common problems with wasabi
What to watch for, with identification and treatment for each
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