When to plant tarragon in Syracuse, New York

April 29 – May 13

Transplant outdoors · typical Syracuse year

Climate basis: NOAA station Syracuse Hancock INTL AP, NY (USW00014771), 5 mi (8 km) from downtown Syracuse (ZCTA 13202 centroid), elevation 413 ft, on the 1991–2020 climate normals. Transplant tarragon outdoors from approximately the dates above, anchored to the median last spring 32°F freeze (April 29). One year in ten still freezes after May 13.

Last spring freezeApril 291-in-10 after May 13

First fall freezeOctober 191-in-10 before Oct 2

Frost-free season≈ 173 daysmedian at 32°F

Hard freeze, 28°Apr 16 – Nov 2kills even hardy greens

USDA zone6a-10 to -5°F winter low — not frost timing

The Syracuse year

Transplant outdoorsApr 29 – May 13

indoors under lights
in the garden
frost-free season
1-in-10 years still freeze to May 13

Tarragon in Syracuse · freeze context from Syracuse Hancock INTL AP, NY, 1991–2020 normals.

Every method, with its sources

Transplant outdoors

Apr 29 – May 13

USU Extension says to transplant French tarragon in the spring after the last frost so the tender young shoots survive, a point rule that opens a two-week planting span at the last spring freeze. Anchored to the median last spring freeze (Apr 29). Utah State University Extension · Virginia Cooperative Extension, Virginia Tech

Start seeds indoors

Not calculated

The cited extension guides do not time an indoor seed-starting window for this crop.

Direct-sow outdoors

Not calculated

The cited extension guides do not time direct sowing 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: Assumes French tarragon, which Virginia Cooperative Extension says can only be propagated asexually — seed-grown plants are the flavourless Russian type — so no seed-sowing window is given.

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 (2)

Utah State University Extension: How to Grow French Tarragon in Your Garden (accessed 2026-07-25)
"Transplant French tarragon in the spring, after the last frost, to ensure the survival of tender young shoots."
Virginia Cooperative Extension, Virginia Tech: Herb Culture and Use (Publication 426-420) (accessed 2026-07-25)
"In addition, many culinary herbs, such as tarragon, can only be propagated asexually; seed-grown plants lack the oils that give them flavor."

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