Root Vegetable

When to Plant Beets in Iowa

Two crops in one — eat the roots and the greens. Beets are cold-hardy and surprisingly easy.

The Short Answer

In Iowa, soil conditions are an important factor for beets. Outstanding black prairie soils. Some of the richest agricultural land in the world. Minimal amendment needed. Direct sow 3 weeks before your last frost date. Beets can also be planted in fall, 8 weeks before your first frost.

Iowa Frost Dates

Your planting dates depend on which part of Iowa you're in. Here are the frost date ranges by region:

Region Zones Last Frost (Spring) First Frost (Fall)
Northern Iowa 4b, 5a May 5 - May 20 Sep 20 - Oct 5
Central Iowa 5a, 5b Apr 25 - May 10 Oct 1 - Oct 15
Southern Iowa 5b Apr 20 - May 5 Oct 5 - Oct 20

Beets Planting Schedule for Iowa

Northern Iowa (Zones 4b, 5a)

Average last frost: May 5 - May 20 · Average first frost: Sep 20 - Oct 5

Direct Sow
3 wks before frost
Fall Planting
8 wks before first frost

Central Iowa (Zones 5a, 5b)

Average last frost: Apr 25 - May 10 · Average first frost: Oct 1 - Oct 15

Direct Sow
3 wks before frost
Fall Planting
8 wks before first frost

Southern Iowa (Zones 5b)

Average last frost: Apr 20 - May 5 · Average first frost: Oct 5 - Oct 20

Direct Sow
3 wks before frost
Fall Planting
8 wks before first frost

Growing Beets in Iowa

Beets in Iowa's Climate

Beets grow beautifully in cold climates. Direct sow from mid-April — they germinate in soil as cool as 40°F. Fall beets from a July-August sowing taste sweeter after frost exposure. They tolerate clay soil better than carrots, making them the more practical root crop for gardeners without raised beds. Beets store for months in a root cellar.

Soil Considerations for Iowa

Outstanding black prairie soils. Some of the richest agricultural land in the world. Minimal amendment needed. Loose, well-drained soil is especially important for beets since the edible portion grows underground. If your soil is heavy clay, consider raised beds.

Iowa Climate & Growing Season

Continental climate. Cold winters, warm humid summers. Good growing season with adequate rainfall. Beets can handle frost well, which is an advantage in Iowa's climate. You can push planting dates earlier in spring and extend into fall.

Growing season length varies across Iowa: Northern Iowa (4b, 5a) has a last frost around May 5 - May 20, while Southern Iowa (5b) sees frost end around Apr 20 - May 5. This difference matters for beets — but beets handle frost well, so the timing difference is less critical.

Growing Tips

Each beet 'seed' is actually a cluster — thin to one plant after sprouting. Harvest at 1.5-3 inches for tender roots.

Companion Planting

Plant beets alongside these companions for better growth:

Onions Lettuce Cabbage Broccoli

Keep beets away from:

Pole Beans

The Bottom Line

Beets can be grown successfully across Iowa, but your exact planting dates depend on which region you're in. Northern Iowa gardeners should plan around a May 5 - May 20 last frost, while those in Southern Iowa can typically plant earlier. For exact dates based on your zip code, use our free planting date finder.

Related Guides

Beets Growing Guide National planting guide with all states Iowa Planting Calendar All plants for Iowa Beets in Alabama Alabama planting dates Beets in Alaska Alaska planting dates Beets in Arizona Arizona planting dates Beets in Arkansas Arkansas planting dates
Note: All dates are based on NOAA 30-year Climate Normals and represent historical averages, not predictions for any specific year. Always check your local weather forecast before planting frost-sensitive crops. Learn about our data sources.

Last reviewed: March 29, 2026

Ready to Start Planting?

Enter your zip code and pick your plant. We'll tell you exactly when to plant, start seeds, and harvest — based on where you live.

Find Your Planting Dates