When to plant summer savory in Oklahoma City, Oklahoma

April 4 – April 18

Transplant outdoors · typical Oklahoma City year

Climate basis: NOAA station Oklahoma City Will Rogers AP, OK (USW00013967), 7 mi (12 km) from downtown Oklahoma City (ZCTA 73102 centroid), elevation 1285 ft, on the 1991–2020 climate normals. Transplant summer savory outdoors from approximately the dates above, anchored to the median last spring 32°F freeze (April 4). One year in ten still freezes after April 20.

Last spring freezeApril 41-in-10 after Apr 20

First fall freezeNovember 21-in-10 before Oct 21

Frost-free season≈ 213 daysmedian at 32°F

Hard freeze, 28°Mar 21 – Nov 11kills even hardy greens

USDA zone7b5 to 10°F winter low — not frost timing

The Oklahoma City year

Start seeds indoorsFeb 21 – Mar 7

Transplant outdoorsApr 4 – Apr 18

Direct-sow outdoorsApr 4 – Apr 18

indoors under lights
in the garden
frost-free season
1-in-10 years still freeze to Apr 20

Summer Savory in Oklahoma City · freeze context from Oklahoma City Will Rogers AP, OK, 1991–2020 normals.

Every method, with its sources

Start seeds indoors

Feb 21 – Mar 7

Illinois Extension allows about 4 to 6 weeks to produce summer savory transplants, and those go out after danger of frost is past, so sowing runs 6 to 4 weeks before the last spring freeze. Anchored to the median last spring freeze (Apr 4). University of Illinois Extension · Texas A&M AgriLife Extension Service

Transplant outdoors

Apr 4 – Apr 18

Illinois Extension transplants summer savory after danger of frost is past, matching the Texas A&M sowing cutoff, so the window opens at the last spring freeze. Anchored to the median last spring freeze (Apr 4). Texas A&M AgriLife Extension Service

Direct-sow outdoors

Apr 4 – Apr 18

Texas A&M AgriLife Extension's herb publication directs seeding summer savory after danger of frost, a point rule that opens a two-week sowing span at the last spring freeze. Anchored to the median last spring freeze (Apr 4). Texas A&M AgriLife Extension Service

Variety assumption: Illinois Extension notes summer savory can be harvested within two months of sowing, so one spring sowing carries the season.

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)

Texas A&M AgriLife Extension Service: Herbs (Easy Gardening series, EHT-079) (accessed 2026-07-25)
"Seed after danger of frost in full sun; space 6–9 in. apart"
University of Illinois Extension: Savory: Summer | Herbs (accessed 2026-07-25)
"Summer savory is grown from seeds sown directly in the garden or indoors and then transplanted after danger of frost is past."

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