When to plant cilantro in Anchorage, Alaska

April 3 – April 17

Direct-sow outdoors · typical Anchorage year

Climate basis: NOAA station Anchorage Merrill Fld, AK (USW00026409), 0 mi (0 km) from downtown Anchorage (ZCTA 99501 centroid), elevation 138 ft, on the 1991–2020 climate normals. Direct-sow cilantro from approximately the dates above, anchored to the median last spring 32°F freeze (May 1). One year in ten still freezes after May 9.

Last spring freezeMay 11-in-10 after May 9
First fall freezeSeptember 291-in-10 before Sep 17
Frost-free season150 daysmedian at 32°F
Hard freeze, 28°Apr 19Oct 8kills even hardy greens
USDA zone5a-20 to -15°F winter low not frost timing

The Anchorage year

Direct-sow outdoorsApr 3 – Apr 17
  • indoors under lights
  • in the garden
  • frost-free season
  • 1-in-10 years still freeze to May 9
Cilantro in Anchorage · freeze context from Anchorage Merrill Fld, AK, 1991–2020 normals.

Every method, with its sources

Direct-sow outdoors

Apr 3 – Apr 17

Oklahoma State: sow two to four weeks before the last spring frost (with a second sowing in late summer for fall harvest). Cilantro bolts in heat — sow early. Anchored to the median last spring freeze (May 1). Oklahoma State University Extension

Start seeds indoors

Not calculated

Cilantro is tap-rooted and resents transplanting; the cited guide times direct sowing only.

Transplant outdoors

Not calculated

The cited extension guides do not time an outdoor transplanting window for this crop.

Fall planting

Not calculated

No source-backed fall planting rule exists for this crop in the registry, so no fall window is calculated.

Variety assumption: Leaf harvest begins about 40–50 days from sowing; bolts quickly in warm weather.

These windows describe typical years (1991–2020 climate normals), not this year's forecast. Freezes happen outside them — especially in frost pockets, valleys, and urban edges. Watch the forecast before committing tender plants.

This week, not a typical year:
Crop rule sources (1)

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