When to plant · 1 city · zone 5a
When to plant basil in Alaska
Start Genovese Basil seeds indoors around Apr 20 and transplant around Jun 1 — the Alaska statewide median, counted from a last spring frost of May 18 across 130 ZIP codes and 87 NOAA stations.
The rule: Basil is damaged below about 50 °F, well before frost: transplant two weeks after the last frost, not on it.
Alaska basil, by step
Statewide median last frost May 18, first fall frost Sep 23, 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 | Apr 20 | Jun 1 | Jul 31 | 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 Alaska's ZIP codes resolve to; 16 of 146 ZIPs have no datable freeze and are left out.
Basil in Alaska, 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 |
|---|---|---|---|---|
| Anchoragezone 5a | May 21 | Apr 23 | Jun 4 | Aug 3 |
What these basil become
What Alaska 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 Alaska: questions
When should I plant basil in Alaska?
Transplant around Jun 1 at the statewide median; across the state that date runs from May 13 in the warmest tenth of Alaska's ZIP codes to Jun 15 in the coldest. To cut the freeze risk to one year in ten, count from May 31 instead of the median last frost. Use the city table for your own town.
When do I start basil seeds indoors in Alaska?
Around Apr 20 for Genovese Basil: 4 weeks before the statewide median last frost, on soil held at 70–80 °F.
When is the last frost in Alaska?
The ZIP-weighted median of NOAA 1991–2020 station medians is May 18. In the warmest tenth of Alaska's ZIP codes the median last frost falls on or before Apr 29; in the coldest tenth, on or after Jun 1.
When will Alaska basil be ready to harvest?
Genovese Basil planted on the statewide date is ready around Jul 31: 60 days from transplant.
More for Alaska
- 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 → · Alaska frost dates → · How frost-date math works →