When to Plant Horseradish in Alaska
Alaska spans USDA hardiness 1a to 8b (zones 1a to 8b on this page). Plant horseradish by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.
Jump to: Zone 1a · Zone 1b · Zone 2a · Zone 2b · Zone 3a · Zone 3b · Zone 4a · Zone 4b · Zone 5a · Zone 5b · Zone 6a · Zone 6b · Zone 7a · Zone 7b · Zone 8a · Zone 8b
Horseradish planting calendar for Alaska, Zone 1a
Average last spring frost
May 24
Average first fall frost
August 25
Direct sow
May 24
Projected first harvest
Nov 20
Horseradish is ready to harvest in about 180 days.
Horseradish planting calendar for Alaska, Zone 1b
Average last spring frost
May 29
Average first fall frost
August 28
Direct sow
May 29
Projected first harvest
Nov 25
Horseradish is ready to harvest in about 180 days.
Horseradish planting calendar for Alaska, Zone 2a
Average last spring frost
May 24
Average first fall frost
September 5
Direct sow
May 24
Projected first harvest
Nov 20
Horseradish is ready to harvest in about 180 days.
Horseradish planting calendar for Alaska, Zone 2b
Average last spring frost
May 30
Average first fall frost
September 6
Direct sow
May 30
Projected first harvest
Nov 26
Horseradish is ready to harvest in about 180 days.
Horseradish planting calendar for Alaska, Zone 3a
Average last spring frost
May 30
Average first fall frost
September 10
Direct sow
May 30
Projected first harvest
Nov 26
Horseradish is ready to harvest in about 180 days. Full zone 3 guide (both 3a and 3b) →
Horseradish planting calendar for Alaska, Zone 3b
Average last spring frost
May 20
Average first fall frost
September 15
Direct sow
May 20
Projected first harvest
Nov 16
Horseradish is ready to harvest in about 180 days. Full zone 3 guide (both 3a and 3b) →
Horseradish planting calendar for Alaska, Zone 4a
Average last spring frost
May 15
Average first fall frost
September 20
Direct sow
May 15
Projected first harvest
Nov 11
Horseradish is ready to harvest in about 180 days. Full zone 4 guide (both 4a and 4b) →
Horseradish planting calendar for Alaska, Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
Direct sow
May 10
Projected first harvest
Nov 6
Horseradish is ready to harvest in about 180 days. Full zone 4 guide (both 4a and 4b) →
Horseradish planting calendar for Alaska, Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
Direct sow
May 5
Projected first harvest
Nov 1
Horseradish is ready to harvest in about 180 days. Full zone 5 guide (both 5a and 5b) →
Horseradish planting calendar for Alaska, Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
Direct sow
Apr 30
Projected first harvest
Oct 27
Horseradish is ready to harvest in about 180 days. Full zone 5 guide (both 5a and 5b) →
Horseradish planting calendar for Alaska, Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
Direct sow
Apr 25
Projected first harvest
Oct 22
Horseradish is ready to harvest in about 180 days. Full zone 6 guide (both 6a and 6b) →
Horseradish planting calendar for Alaska, Zone 6b
Average last spring frost
April 20
Average first fall frost
October 15
Direct sow
Apr 20
Projected first harvest
Oct 17
Horseradish is ready to harvest in about 180 days. Full zone 6 guide (both 6a and 6b) →
Horseradish planting calendar for Alaska, Zone 7a
Average last spring frost
April 15
Average first fall frost
October 20
Direct sow
Apr 15
Projected first harvest
Oct 12
Horseradish is ready to harvest in about 180 days. Full zone 7 guide (both 7a and 7b) →
Horseradish planting calendar for Alaska, Zone 7b
Average last spring frost
April 10
Average first fall frost
October 30
Direct sow
Apr 10
Projected first harvest
Oct 7
Horseradish is ready to harvest in about 180 days. Full zone 7 guide (both 7a and 7b) →
Horseradish planting calendar for Alaska, Zone 8a
Average last spring frost
April 1
Average first fall frost
November 10
Direct sow
Apr 1
Projected first harvest
Sep 28
Horseradish is ready to harvest in about 180 days. Full zone 8 guide (both 8a and 8b) →
Horseradish planting calendar for Alaska, Zone 8b
Average last spring frost
March 20
Average first fall frost
November 20
Direct sow
Mar 20
Projected first harvest
Sep 16
Horseradish is ready to harvest in about 180 days. Full zone 8 guide (both 8a and 8b) →
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 horseradish in the HomeSown library. Tap any for its full grow guide.
Common problems with horseradish
What to watch for, with identification and treatment for each
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