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