When to plant basil 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). Basil needs 30–60 days to mature, which fits comfortably within Nebraska's growing season.
When to plant basil in Nebraska: the short answer
For a spring planting, plant out May 7 – May 24, with seeds started indoors Mar 19 – Apr 2. Wait until the soil is at least 65°F and frost is over.
Succession sow again in Nebraska: Jun 4 · Jun 25 · Jul 16 · Aug 6
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 basil in Nebraska, step by step
- Start seeds indoors (Mar 19 – Apr 2). Sow seeds ⅛ inch deep in seed-starting mix under bright light. They take 5-10 days to sprout, fastest in soil around 80°F. Harden seedlings off for a week before they go outside.
- Prepare the bed. It needs at least six to eight hours of direct sun a day and loose soil at least 10 inches deep, with a pH between 6.0 and 7.0. Dig in compost before planting.
- Plant out (May 7 – May 24). Space plants about 10 inches apart in rows 12 inches apart. It is killed by frost, so nothing goes outside until the danger has passed.
- 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: aphids, Japanese beetle, slugs. Diseases and disorders: basil downy mildew, fusarium wilt, damping off.
- Harvest (from about Jun 13 – Jul 13). Basil takes 30-60 days to reach harvest. Cold soil stalls it - wait for warm nights. Pinch above a leaf pair every couple of weeks and remove flower buds to keep leaves coming. Downy mildew-resistant varieties are worth seeking out.
Figures come from our crop data; dates use Nebraska’s average frost dates. More in the full basil growing guide.
Basil 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 basil dates shift with them.
When to plant basil in nearby states
| State | Last frost | Plant out |
|---|---|---|
| Nebraska (this page) | April 30 | May 7 – May 24 |
| North Dakota | May 15 | May 22 – Jun 8 |
| South Dakota | May 10 | May 17 – Jun 3 |
| Kansas | April 15 | Apr 22 – May 9 |
| Oklahoma | April 1 | Apr 8 – Apr 25 |
Questions gardeners in Nebraska ask
When is the best time to plant basil in Nebraska?
Plant basil transplants outdoors in Nebraska between May 7 and May 24. That timing is set by Nebraska's average last spring frost of April 30.
When should I start basil seeds indoors in Nebraska?
Start seeds indoors between March 19 and April 2, about 5 weeks before the last frost, so the seedlings are ready to plant out from May 7.
What is the latest I can plant basil in Nebraska?
About September 5. Basil needs at least 30 days to mature, and frost around October 5 ends the season, so later plantings risk being cut short.
When will basil planted in Nebraska be ready to harvest?
Planted on time, basil is usually ready from about June 13 to July 13, 30-60 days after planting.
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.