When to plant arugula in Nebraska
Nebraska’s average last spring frost is April 30, and the first fall frost typically arrives around October 5 — about 158 frost-free days (USDA zones 4b, 5a, 5b). Arugula needs 30–40 days to mature, which fits comfortably within Nebraska's growing season.
When to plant arugula in Nebraska: the short answer
For a spring planting, sow Mar 28 – Apr 16. Seeds germinate in soil from 40 to 75°F.
Succession sow again in Nebraska: Apr 14 · Apr 26 · May 8 · May 20 · Jun 1
Spring succession stops before summer heat makes it bolt. Start sowing again in late summer for a fall crop (see the fall window above).
Windows are ~1–2 week bands around each date. Frost dates are a statewide average from NOAA/NCEI normals; your town may differ by two weeks or more. Calendar year 2026.
How to grow arugula in Nebraska, step by step
- Prepare the bed. It needs six or more hours of sun for the best growth, though four to six hours in partial shade is enough and loose soil at least 8 inches deep, with a pH between 6.0 and 7.0. Dig in compost before planting.
- Sow outdoors (Mar 28 – Apr 16). Space plants about 4 inches apart in rows 10 inches apart, sowing seed ¼ inch deep. It handles frost well, so it can go out before the last frost date. As a cool-season crop it does best before summer heat arrives in Nebraska.
- Water and feed. Give it steady, even moisture, about an inch of water a week from rain or the hose.
- Watch for pests and problems. Pests: flea beetle, aphids, cabbage worm. Diseases and disorders: downy mildew, white rust.
- Harvest (from about May 2 – May 12). Arugula takes 30-40 days to reach harvest. One of the fastest crops - baby leaves in about 3 weeks. Turns sharp and bitter and bolts in heat, so it is a spring/fall green. Flea beetles love it; grow under mesh.
Figures come from our crop data; dates use Nebraska’s average frost dates. More in the full arugula growing guide.
Arugula planting dates by USDA zone in Nebraska
Nebraska spans USDA zones 4b, 5a, 5b. Colder zones, usually higher or further inland, have a later last spring frost and an earlier first fall frost than the state average, so the arugula dates shift with them.
When to plant arugula in nearby states
| State | Last frost | Sow |
|---|---|---|
| Nebraska (this page) | April 30 | Mar 28 – Apr 16 |
| North Dakota | May 15 | Apr 12 – May 1 |
| South Dakota | May 10 | Apr 7 – Apr 26 |
| Kansas | April 15 | Mar 13 – Apr 1 |
| Oklahoma | April 1 | Feb 27 – Mar 18 |
Questions gardeners in Nebraska ask
When is the best time to plant arugula in Nebraska?
Sow arugula in Nebraska between March 28 and April 16. That timing is set by Nebraska's average last spring frost of April 30.
Can I plant arugula in the fall in Nebraska?
Yes. For a fall crop, sow between August 14 and August 31, so the crop matures in cool weather before Nebraska's first frost around October 5.
When will arugula planted in Nebraska be ready to harvest?
Planted on time, arugula is usually ready from about May 2 to May 12, 30-40 days after sowing.
When is the last frost in Nebraska?
On average around April 30, with the first fall frost around October 5 - about 158 frost-free days. Your town may differ by two weeks or more.