When to plant · 1 city · zone 8a
When to plant basil in Washington, DC
Start Genovese Basil seeds indoors around Feb 24 and transplant around Apr 7 — the Washington, DC district-wide median, counted from a last spring frost of Mar 24 across 57 ZIP codes and 3 NOAA stations.
The rule: Basil is damaged below about 50 °F, well before frost: transplant two weeks after the last frost, not on it.
Washington, DC basil, by step
Statewide median last frost Mar 24, first fall frost Nov 18, 2027 season. Each cultivar's own indoor lead time and days to maturity, same engine as the Plan Builder.
| Cultivar | Start indoors | Plant out | First harvest | Days |
|---|---|---|---|---|
| Genovese BasilGenovese | Feb 24 | Apr 7 | Jun 6 | 60 from transplant |
Tight means first harvest lands within two weeks of the median first fall frost. Statewide dates are the ZIP-weighted median of every NOAA 1991–2020 station Washington, DC's ZIP codes resolve to.
Basil in Washington, DC, city by city
Genovese Basil, scheduled from each city's nearest NOAA station — the same dates as its frost page.
| City | Last frost | Start indoors | Plant out | First harvest |
|---|---|---|---|---|
| Washingtonzone 8a | Mar 29 | Mar 1 | Apr 12 | Jun 11 |
What these basil become
What Washington, DC basil need
Genovese Sweet Basil Seed
The large-leaf, low-anise Italian basil that pesto is defined by. Thai and lemon basils are good plants and wrong ingredients.
Organic Seed Starter Potting MixMust have
Seed-starting mix is not potting soil with a nicer label — it is finer, lighter, and low in nutrients on purpose, because a seedling's first roots want air and moisture, not fertiliser.
T8 Full-Spectrum Grow Lights, 1 ft 4-packMust have
A south window in March delivers a fraction of the light a pepper seedling needs, and the plant tells you by stretching. Two inches of LED above the canopy for 16 hours a day fixes it permanently.
5-Gallon Fabric Grow Bags, 5-Pack
Fabric pots air-prune roots and drain faster than a plastic pot can, which is the entire reason container tomatoes fail. Five gallons is the honest minimum for a pepper; a tomato wants ten.
Ocean Forest Potting SoilMust have
Pre-charged with enough nutrition to carry a transplant for its first month without feeding, which is exactly the window when most container plants stall.
6" Micro-Tip Pruning SnipsMust have
Ninety percent of sauce-garden cutting is snipping a pepper stem or a basil node, and a fine-tipped snip does it better than any pruner. Pulling peppers by hand tears the branch.
Mesh Strainers, Stainless, 3-Count
The last pass before bottling. A fine mesh catches the skin fragments and seed shards that make a hot sauce gritty and clog a woozy bottle's dripper insert.
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Basil in Washington, DC: questions
When should I plant basil in Washington, DC?
Transplant around Apr 7 at the statewide median; across the state that date runs from Apr 7 in the warmest tenth of Washington, DC's ZIP codes to Apr 23 in the coldest. To cut the freeze risk to one year in ten, count from Apr 6 instead of the median last frost. Use the city table for your own town.
When do I start basil seeds indoors in Washington, DC?
Around Feb 24 for Genovese Basil: 4 weeks before the statewide median last frost, on soil held at 70–80 °F.
When is the last frost in Washington, DC?
The ZIP-weighted median of NOAA 1991–2020 station medians is Mar 24. In the warmest tenth of Washington, DC's ZIP codes the median last frost falls on or before Mar 24; in the coldest tenth, on or after Apr 9.
When will Washington, DC basil be ready to harvest?
Genovese Basil planted on the statewide date is ready around Jun 6: 60 days from transplant.
More for Washington, DC
- When to plant tomatoes
- When to plant peppers
- When to plant tomatillos
- When to plant onions
- When to plant cilantro
- When to plant carrots
- When to plant mustard greens
Basil in every state → · Washington, DC frost dates → · How frost-date math works →