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When to plant garlic in Pittsburgh: 10 October – 22 December

In Pittsburgh, garlic: plant from 10 October to about 22 December. For planting stock, the places nearby include Urban Gardner (garden centre, 3 km) and Phelps Nursery USC (garden centre, 11 km); addresses and opening hours are below.

Garlic is best planted early in the window: cloves planted late make smaller bulbs. Late planting works only while the soil is not frozen. Mulch after planting.

The date is about two weeks before the average daily temperature here falls below 0 °C (ten years of weather): an estimate, not the day the ground freezes, and a cold spell can freeze it earlier. Sources: UVM Extension, UNH Extension, RHS, how the ground freezes (NRC Canada, CBD-26).

Garlic in Pittsburgh: soil, season and weather

Garlic goes into the ground in Pittsburgh from 10 October to about 22 December; the window opens a month before the first autumn frost. Nights then average below 0 °C in December–February; the coldest, January, averages -5 °C.

Planting10 October – 22 December
First autumn frost9 November
Coldest nightsJanuary, -5 °C
Soil back at 5 °C in spring28 February
Harvest (card)about 8 months after planting: June
Daylight11:24 on 10 October
Daylight at the winter solstice9:17

The same dates in Pittsburgh hold for Tulip, Daffodil, Crocus and Hyacinth.

Garlic in Pittsburgh: care after planting

Planted on 10 October: in the first weeks water every 7 days.

Feeding, by the card’s schedule from that day:

  • 10 October — feed: nitrogen
  • 7 November — feed: nitrogen

Pests and diseases of garlic to watch for:

Dates count from the first planting day of the window above; a later planting moves them by as many days.

Garlic in nearby cities

Around Pittsburgh, Columbus is 7 days earlier and Cleveland 12 days later.

CityDistanceDateDifference
Cleveland185 km22 October – 23 December12 days later
Erie188 km20 October – 22 December10 days later
Hagerstown213 km12 October – end of December2 days later
Columbus260 km3 October – 25 December7 days earlier
Harrisburg265 km12 October – end of December2 days later
Charleston, West Virginia271 km8 October – end of December2 days earlier

Where to buy garlic for planting in Pittsburgh

Planting stock goes into the ground from 10 October to about 22 December; buy it before that. Within 15 km of Pittsburgh OpenStreetMap lists 11 garden centres, 4 plant nurseries, 23 markets and 4 farm shops (collected 20 October 2026).

Places: © OpenStreetMap contributors, ODbL.

Questions

When to plant garlic in Pittsburgh?

In Pittsburgh, garlic: plant from 10 October to about 22 December. Garlic is best planted early in the window: cloves planted late make smaller bulbs. Late planting works only while the soil is not frozen. Mulch after planting.

When is the last spring frost in Pittsburgh?

Last spring frost around 19 April, first autumn frost around 9 November.

Other crops in Pittsburgh, with their dates