When to Plant Amaranth in Iowa
Iowa spans USDA hardiness 4b to 6a (zones 4b to 6a on this page). Plant amaranth by your local frost date, not the calendar — pick your zone below for exact start-indoors, transplant, and harvest dates.
Jump to: Zone 4b · Zone 5a · Zone 5b · Zone 6a
Amaranth planting calendar for Iowa, Zone 4b
Average last spring frost
May 10
Average first fall frost
September 25
Direct sow
May 17
Projected first harvest
Jul 6
Amaranth is ready to harvest in about 50 days. Full zone 4 guide (both 4a and 4b) →
Amaranth planting calendar for Iowa, Zone 5a
Average last spring frost
May 5
Average first fall frost
October 1
Direct sow
May 12
Projected first harvest
Jul 1
Amaranth is ready to harvest in about 50 days. Full zone 5 guide (both 5a and 5b) →
Amaranth planting calendar for Iowa, Zone 5b
Average last spring frost
April 30
Average first fall frost
October 5
Direct sow
May 7
Projected first harvest
Jun 26
Amaranth is ready to harvest in about 50 days. Full zone 5 guide (both 5a and 5b) →
Amaranth planting calendar for Iowa, Zone 6a
Average last spring frost
April 25
Average first fall frost
October 10
Direct sow
May 2
Projected first harvest
Jun 21
Amaranth is ready to harvest in about 50 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 amaranth in the HomeSown library. Tap any for its full grow guide.
Common problems with amaranth
What to watch for, with identification and treatment for each
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