PlantingWindowThe American Planting Almanac

When to plant summer savory in Manchester, New Hampshire

April 30 – May 14

Transplant outdoors · typical Manchester year

Climate basis: NOAA station Massabesic Lake, NH (USC00275211), 4 mi (6 km) from downtown Manchester (ZCTA 03101 centroid), elevation 253 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 30). One year in ten still freezes after May 14.

Last spring freezeApril 301-in-10 after May 14
First fall freezeOctober 111-in-10 before Sep 30
Frost-free season≈ 164 daysmedian at 32°F
Hard freeze, 28°Apr 17 – Oct 24kills even hardy greens
USDA zone6a-10 to -5°F winter low — not frost timing

The Manchester year

Start seeds indoorsMar 19 – Apr 2
Transplant outdoorsApr 30 – May 14
Direct-sow outdoorsApr 30 – May 14
  • indoors under lights
  • in the garden
  • frost-free season
  • 1-in-10 years still freeze to May 14
Summer Savory in Manchester · freeze context from Massabesic Lake, NH, 1991–2020 normals.

Every method, with its sources

Start seeds indoors

Mar 19 – Apr 2

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 30). University of Illinois Extension · Texas A&M AgriLife Extension Service

Transplant outdoors

Apr 30 – May 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 (Apr 30). Texas A&M AgriLife Extension Service

Direct-sow outdoors

Apr 30 – May 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 (Apr 30). 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

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