PlantingWindowThe American Planting Almanac

When to plant summer savory in Tulsa, Oklahoma

March 31 – April 14

Transplant outdoors · typical Tulsa year

Climate basis: NOAA station Tulsa INTL AP, OK (USW00013968), 7 mi (11 km) from downtown Tulsa (ZCTA 74103 centroid), elevation 650 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 (March 31). One year in ten still freezes after April 15.

Last spring freezeMarch 311-in-10 after Apr 15
First fall freezeNovember 41-in-10 before Oct 20
Frost-free season≈ 220 daysmedian at 32°F
Hard freeze, 28°Mar 17 – Nov 13kills even hardy greens
USDA zone7b5 to 10°F winter low — not frost timing

The Tulsa year

Start seeds indoorsFeb 17 – Mar 3
Transplant outdoorsMar 31 – Apr 14
Direct-sow outdoorsMar 31 – Apr 14
  • indoors under lights
  • in the garden
  • frost-free season
  • 1-in-10 years still freeze to Apr 15
Summer Savory in Tulsa · freeze context from Tulsa INTL AP, OK, 1991–2020 normals.

Every method, with its sources

Start seeds indoors

Feb 17 – Mar 3

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 (Mar 31). University of Illinois Extension · Texas A&M AgriLife Extension Service

Transplant outdoors

Mar 31 – Apr 14

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 (Mar 31). Texas A&M AgriLife Extension Service

Direct-sow outdoors

Mar 31 – Apr 14

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 (Mar 31). 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)

Keep exploring

This crop, other cities
Related crops in Tulsa
Local overview