When to plant spinach in Maryland
Maryland’s average last spring frost is April 14, and the first fall frost typically arrives around October 20 — about 189 frost-free days (USDA zones 5b, 6a, 6b, 7a, 7b, 8a). Spinach needs 37–45 days to mature, which fits comfortably within Maryland's growing season.
Maryland covers a wide range of climates, so your exact frost dates may differ from the state average by two weeks or more. For dates tuned to your town, use the calendar generator.
When to plant spinach in Maryland: the short answer
For a spring planting, sow Mar 5 – Mar 24. Seeds germinate in soil from 35 to 75°F.
Succession sow again in Maryland: Mar 22 · Apr 3 · Apr 15 · Apr 27 · May 9
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 spinach in Maryland, 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 12 inches deep, with a pH between 6.0 and 7.5. Dig in compost before planting.
- Sow outdoors (Mar 5 – Mar 24). Space plants about 4 inches apart in rows 12 inches apart, sowing seed ½ inch deep. It tolerates hard frost, so it is one of the first crops to plant. As a cool-season crop it does best before summer heat arrives in Maryland.
- 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: leaf miner, aphids, flea beetle. Diseases and disorders: downy mildew, white rust, damping off.
- Harvest (from about Apr 16 – Apr 24). Spinach takes 37-45 days to reach harvest. Bolts fast in heat and long days - it is really a spring and fall crop. A late-fall sowing under row cover often overwinters for an early-spring cut.
Figures come from our crop data; dates use Maryland’s average frost dates. More in the full spinach growing guide.
Spinach planting dates by USDA zone in Maryland
Maryland spans USDA zones 5b, 6a, 6b, 7a, 7b, 8a. 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 spinach dates shift with them.
When to plant spinach in nearby states
| State | Last frost | Sow |
|---|---|---|
| Maryland (this page) | April 14 | Mar 5 – Mar 24 |
| New Jersey | April 20 | Mar 11 – Mar 30 |
| Pennsylvania | May 1 | Mar 22 – Apr 10 |
| Delaware | April 14 | Mar 5 – Mar 24 |
| District of Columbia | April 10 | Mar 1 – Mar 20 |
| Virginia | April 15 | Mar 6 – Mar 25 |
| West Virginia | May 5 | Mar 26 – Apr 14 |
Questions gardeners in Maryland ask
When is the best time to plant spinach in Maryland?
Sow spinach in Maryland between March 5 and March 24. That timing is set by Maryland's average last spring frost of April 14; Maryland spans several climates, so cooler and higher parts of the state run later.
Can I plant spinach in the fall in Maryland?
Yes. For a fall crop, sow between August 22 and September 8, so the crop matures in cool weather before Maryland's first frost around October 20.
When will spinach planted in Maryland be ready to harvest?
Planted on time, spinach is usually ready from about April 16 to April 24, 37-45 days after sowing.
When is the last frost in Maryland?
On average around April 14, with the first fall frost around October 20 - about 189 frost-free days. Your town may differ by two weeks or more.