When to plant swiss chard in Maryland
Maryland spans USDA zones 7a–8a, so the right time to plant swiss chard shifts by weeks across the state. The window to sow seed directly outdoors runs from about March 8 in California to April 10 in Westminster — below are local dates for 139 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Baltimore | 8a | March 24 | November 21 | March 10 – April 21 |
| Columbia | 7b | April 5 | November 9 | March 22 – May 3 |
| Germantown | 7b | April 14 | October 29 | March 31 – May 12 |
| Frederick | 7b | April 2 | November 6 | March 19 – April 30 |
| Waldorf | 7b | April 17 | October 27 | April 3 – May 15 |
| Silver Spring | 7b | April 10 | November 1 | March 27 – May 8 |
| Ellicott City | 7b | April 2 | November 7 | March 19 – April 30 |
| Glen Burnie | 7b | April 10 | October 31 | March 27 – May 8 |
Swiss Chard in Maryland: FAQ
When can I plant swiss chard in Maryland?
Across Maryland, the time to direct-sow swiss chard spans roughly March 8 in California to April 10 in Westminster, each following that city's local frost dates.
Does the swiss chard planting date vary across Maryland?
Yes. Maryland publishes 139 cities with their own frost dates, so the right swiss chard planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
How long does swiss chard take to grow in Maryland?
Swiss Chard takes about 50–60 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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