Pennsylvania, US

Planting calendar for Pittsburgh

Last frost around April 12, first frost around November 7: about 209 frost-free days.

Last frost: April 12
First frost: November 7
Frost-free days: 209

Sow now: November

See the whole year

Outdoors

Fava bean
Garlic
Raspberry
Rhubarb

Under cover

Nothing this month.

The year at a glance

When each crop can be sown in Pittsburgh. Tap a crop for exact dates and when it’s ready to harvest.

Sow outdoorsSow under cover (indoors, a greenhouse or a cold frame)

When to sow each crop in Pittsburgh, month by month. Each month says whether you can sow outdoors, under cover, or both.
Crop	JJan	FFeb	MMar	AApr	MMay	JJun	JJul	AAug	SSep	OOct	NNov	DDec
Fruiting
Tomato	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Sow under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Chile pepper	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Sow under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Bell pepper	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Eggplant	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Sow under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Zucchini	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Cucumber	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Winter squash	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Sweet corn	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Roots
Carrot	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Beet	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Parsnip	January: Not this month	February: Not this month	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Radish	January: Not this month	February: Not this month	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow under cover	November: Not this month	December: Not this month
Potato	January: Not this month	February: Not this month	March: Plant outdoors and under cover	April: Plant outdoors and under cover	May: Plant outdoors and under cover	June: Plant under cover	July: Plant under cover	August: Plant outdoors and under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Turnip	January: Not this month	February: Not this month	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Leaves
Lettuce	January: Not this month	February: Not this month	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Spinach	January: Not this month	February: Not this month	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow under cover	November: Not this month	December: Not this month
Swiss chard	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Arugula	January: Not this month	February: Not this month	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow under cover	November: Not this month	December: Not this month
Celery	January: Not this month	February: Sow under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow under cover	July: Not this month	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Beans and peas
Runner bean	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Green bean	January: Not this month	February: Not this month	March: Not this month	April: Sow under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Fava bean	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Not this month	June: Not this month	July: Not this month	August: Not this month	September: Sow under cover	October: Sow outdoors and under cover	November: Sow outdoors and under cover	December: Sow under cover
Pea	January: Not this month	February: Not this month	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Onion family
Onion	January: Not this month	February: Plant under cover	March: Plant outdoors and under cover	April: Plant outdoors and under cover	May: Plant outdoors and under cover	June: Plant under cover	July: Not this month	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Garlic	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Not this month	June: Not this month	July: Not this month	August: Not this month	September: Plant under cover	October: Plant outdoors and under cover	November: Plant outdoors and under cover	December: Plant under cover
Leek	January: Not this month	February: Not this month	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Scallion	January: Not this month	February: Sow under cover	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow under cover	November: Not this month	December: Not this month
Shallot	January: Not this month	February: Plant under cover	March: Plant outdoors and under cover	April: Plant outdoors and under cover	May: Plant outdoors and under cover	June: Plant under cover	July: Not this month	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Brassicas
Cabbage	January: Not this month	February: Not this month	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Broccoli	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Cauliflower	January: Not this month	February: Not this month	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow under cover	July: Not this month	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Brussels sprout	January: Not this month	February: Not this month	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow under cover	July: Not this month	August: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Kale	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Bok choy	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow under cover	November: Not this month	December: Not this month
Herbs
Basil	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Parsley	January: Not this month	February: Not this month	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Cilantro	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow under cover	November: Not this month	December: Not this month
Chives	January: Not this month	February: Not this month	March: Sow outdoors and under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Mint	January: Not this month	February: Not this month	March: Sow under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow under cover	November: Not this month	December: Not this month
Fruit
Strawberry	January: Not this month	February: Not this month	March: Plant outdoors and under cover	April: Plant outdoors and under cover	May: Plant outdoors and under cover	June: Plant under cover	July: Plant under cover	August: Plant outdoors and under cover	September: Plant under cover	October: Not this month	November: Not this month	December: Not this month
Raspberry	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Not this month	June: Not this month	July: Not this month	August: Not this month	September: Not this month	October: Plant under cover	November: Plant outdoors and under cover	December: Plant under cover
Rhubarb	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Not this month	June: Not this month	July: Not this month	August: Not this month	September: Not this month	October: Plant under cover	November: Plant outdoors and under cover	December: Plant under cover

Fruit rows show when to plant, not sow.

Crop by crop

Fruiting

TomatoOutdoors May 17 to Jun 11, and Jul 26 to Aug 6; Under cover Apr 19 to Jul 9, and Jul 26 to Aug 6, and Aug 23 to Sep 3

Sow outdoors: May 17 to Jun 11, and Jul 26 to Aug 6
Under cover: Apr 19 to Jul 9, and Jul 26 to Aug 6, and Aug 23 to Sep 3
First harvest: About 66 days after sowing. Sown on May 17, ready around July 22.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Tomato across the US, town by town

Chile pepperOutdoors May 16 to Jun 11, and Jul 26 to Aug 5; Under cover Apr 18 to Jul 9, and Jul 26 to Aug 5, and Aug 23 to Sep 2

Sow outdoors: May 16 to Jun 11, and Jul 26 to Aug 5
Under cover: Apr 18 to Jul 9, and Jul 26 to Aug 5, and Aug 23 to Sep 2
First harvest: About 84 days after sowing. Sown on May 16, ready around August 8.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Chile pepper across the US, town by town

Bell pepperOutdoors May 21 to Jun 16, and Jul 26 to Aug 7; Under cover Apr 23 to Jul 14, and Jul 26 to Aug 7, and Aug 23 to Sep 4

Sow outdoors: May 21 to Jun 16, and Jul 26 to Aug 7
Under cover: Apr 23 to Jul 14, and Jul 26 to Aug 7, and Aug 23 to Sep 4
First harvest: About 78 days after sowing. Sown on May 21, ready around August 7.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Bell pepper across the US, town by town

EggplantOutdoors May 21 to Jun 11, and Jul 26 to Aug 5; Under cover Apr 23 to Jul 9, and Jul 26 to Aug 5, and Aug 23 to Sep 2

Sow outdoors: May 21 to Jun 11, and Jul 26 to Aug 5
Under cover: Apr 23 to Jul 9, and Jul 26 to Aug 5, and Aug 23 to Sep 2
First harvest: About 90 days after sowing. Sown on May 21, ready around August 19.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Eggplant across the US, town by town

ZucchiniOutdoors May 16 to Jun 26, and Jul 26 to Aug 26; Under cover Apr 18 to Sep 23

Sow outdoors: May 16 to Jun 26, and Jul 26 to Aug 26
Under cover: Apr 18 to Sep 23
First harvest: About 39 days after sowing. Sown on May 16, ready around June 24.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Zucchini across the US, town by town

CucumberOutdoors May 16 to Jun 26, and Jul 26 to Aug 21; Under cover Apr 18 to Sep 18

Sow outdoors: May 16 to Jun 26, and Jul 26 to Aug 21
Under cover: Apr 18 to Sep 18
First harvest: About 43 days after sowing. Sown on May 16, ready around June 28.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Cucumber across the US, town by town

Winter squashOutdoors May 16 to Jun 16, and Jul 26 to Aug 7; Under cover Apr 18 to Jul 14, and Jul 26 to Aug 7, and Aug 23 to Sep 4

Sow outdoors: May 16 to Jun 16, and Jul 26 to Aug 7
Under cover: Apr 18 to Jul 14, and Jul 26 to Aug 7, and Aug 23 to Sep 4
First harvest: About 66 days after sowing. Sown on May 16, ready around July 21.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Winter squash across the US, town by town

Sweet cornOutdoors May 11 to Jun 16, and Jul 26 to Aug 9; Under cover Apr 13 to Jul 14, and Jul 26 to Aug 9, and Aug 23 to Sep 6

Sow outdoors: May 11 to Jun 16, and Jul 26 to Aug 9
Under cover: Apr 13 to Jul 14, and Jul 26 to Aug 9, and Aug 23 to Sep 6
First harvest: About 60 days after sowing. Sown on May 11, ready around July 10.
Warmth: Tender: needs days averaging 52°F or more, and no frost.

Sweet corn across the US, town by town

Roots

CarrotOutdoors Mar 30 to Jul 8, and Jul 26 to Aug 8; Under cover Mar 2 to Aug 8, and Aug 23 to Sep 5

Sow outdoors: Mar 30 to Jul 8, and Jul 26 to Aug 8
Under cover: Mar 2 to Aug 8, and Aug 23 to Sep 5
First harvest: About 75 days after sowing. Sown on March 30, ready around June 13.
Warmth: Hardy: grows once days average 45°F.

Carrot across the US, town by town

BeetOutdoors Mar 30 to Aug 23; Under cover Mar 2 to Sep 20

Sow outdoors: Mar 30 to Aug 23
Under cover: Mar 2 to Sep 20
First harvest: About 53 days after sowing. Sown on March 30, ready around May 22.
Warmth: Hardy: grows once days average 45°F.

Beet across the US, town by town

ParsnipOutdoors Mar 24 to Jun 9; Under cover Feb 24 to Jul 7

Sow outdoors: Mar 24 to Jun 9
Under cover: Feb 24 to Jul 7
First harvest: About 91 days after sowing. Sown on March 24, ready around June 23.
Warmth: Hardy: grows once days average 43°F.

Parsnip across the US, town by town

RadishOutdoors Mar 24 to Jun 3, and Jul 22 to Oct 1; Under cover Feb 24 to Oct 29

Sow outdoors: Mar 24 to Jun 3, and Jul 22 to Oct 1
Under cover: Feb 24 to Oct 29
First harvest: About 20 days after sowing. Sown on March 24, ready around April 13.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Radish across the US, town by town

PotatoOutdoors Mar 24 to May 19, and Jul 26 to Aug 9; Under cover Feb 24 to Jun 16, and Jun 28 to Jul 12, and Jul 26 to Aug 9, and Aug 23 to Sep 6

Plant outdoors: Mar 24 to May 19, and Jul 26 to Aug 9
Under cover: Feb 24 to Jun 16, and Jun 28 to Jul 12, and Jul 26 to Aug 9, and Aug 23 to Sep 6
First harvest: About 70 days after planting. Planted on March 24, ready around June 2.
Warmth: Hardy: grows once days average 43°F.

Potato across the US, town by town

TurnipOutdoors Mar 24 to Sep 4; Under cover Feb 24 to Oct 2

Sow outdoors: Mar 24 to Sep 4
Under cover: Feb 24 to Oct 2
First harvest: About 41 days after sowing. Sown on March 24, ready around May 4.
Warmth: Hardy: grows once days average 43°F.

Turnip across the US, town by town

Leaves

LettuceOutdoors Mar 25 to May 23, and Aug 2 to Aug 31; Under cover Feb 25 to Jun 20, and Jul 5 to Sep 28

Sow outdoors: Mar 25 to May 23, and Aug 2 to Aug 31
Under cover: Feb 25 to Jun 20, and Jul 5 to Sep 28
First harvest: About 49 days after sowing. Sown on March 25, ready around May 13.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Lettuce across the US, town by town

SpinachOutdoors Mar 24 to May 23, and Aug 2 to Sep 26; Under cover Feb 24 to Jun 20, and Jul 5 to Oct 24

Sow outdoors: Mar 24 to May 23, and Aug 2 to Sep 26
Under cover: Feb 24 to Jun 20, and Jul 5 to Oct 24
First harvest: About 31 days after sowing. Sown on March 24, ready around April 24.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Spinach across the US, town by town

Swiss chardOutdoors Mar 30 to Sep 4; Under cover Mar 2 to Oct 2

Sow outdoors: Mar 30 to Sep 4
Under cover: Mar 2 to Oct 2
First harvest: About 46 days after sowing. Sown on March 30, ready around May 15.
Warmth: Hardy: grows once days average 45°F.

Swiss chard across the US, town by town

ArugulaOutdoors Mar 24 to May 23, and Aug 2 to Sep 27; Under cover Feb 24 to Jun 20, and Jul 5 to Oct 25

Sow outdoors: Mar 24 to May 23, and Aug 2 to Sep 27
Under cover: Feb 24 to Jun 20, and Jul 5 to Oct 25
First harvest: About 28 days after sowing. Sown on March 24, ready around April 21.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Arugula across the US, town by town

CeleryOutdoors Mar 20 to May 19; Under cover Feb 20 to Jun 16

Sow outdoors: Mar 20 to May 19
Under cover: Feb 20 to Jun 16
First harvest: About 86 days after sowing. Sown on March 20, ready around June 14.
Warmth: Hardy: grows once days average 41°F.

Celery across the US, town by town

Beans and peas

Runner beanOutdoors May 11 to Jun 26, and Jul 26 to Aug 14; Under cover Apr 13 to Aug 14, and Aug 23 to Sep 11

Sow outdoors: May 11 to Jun 26, and Jul 26 to Aug 14
Under cover: Apr 13 to Aug 14, and Aug 23 to Sep 11
First harvest: About 54 days after sowing. Sown on May 11, ready around July 4.
Warmth: Tender: needs days averaging 52°F or more, and no frost.

Runner bean across the US, town by town

Green beanOutdoors May 11 to Jul 11, and Jul 26 to Aug 23; Under cover Apr 13 to Sep 20

Sow outdoors: May 11 to Jul 11, and Jul 26 to Aug 23
Under cover: Apr 13 to Sep 20
First harvest: About 48 days after sowing. Sown on May 11, ready around June 28.
Warmth: Tender: needs days averaging 52°F or more, and no frost.

Green bean across the US, town by town

Fava beanOutdoors Oct 20 to Nov 15; Under cover Sep 22 to Dec 13

Sow outdoors: Oct 20 to Nov 15
Under cover: Sep 22 to Dec 13
First harvest: About 220 days after sowing. Sown on October 20, ready around May 28.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Fava bean across the US, town by town

PeaOutdoors Mar 24 to Jun 3, and Jul 26 to Aug 15; Under cover Feb 24 to Sep 12

Sow outdoors: Mar 24 to Jun 3, and Jul 26 to Aug 15
Under cover: Feb 24 to Sep 12
First harvest: About 55 days after sowing. Sown on March 24, ready around May 18.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Pea across the US, town by town

Onion family

OnionOutdoors Mar 22 to May 12; Under cover Feb 22 to Jun 9

Plant outdoors: Mar 22 to May 12
Under cover: Feb 22 to Jun 9
First harvest: About 96 days after planting. Planted on March 22, ready around June 26.
Warmth: Hardy: grows once days average 43°F.

Onion across the US, town by town

GarlicOutdoors Oct 20 to Nov 19; Under cover Sep 22 to Dec 17

Plant outdoors: Oct 20 to Nov 19
Under cover: Sep 22 to Dec 17
First harvest: About 250 days after planting. Planted on October 20, ready around June 27.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Garlic across the US, town by town

LeekOutdoors Mar 24 to Jul 9; Under cover Feb 24 to Aug 6

Sow outdoors: Mar 24 to Jul 9
Under cover: Feb 24 to Aug 6
First harvest: About 105 days after sowing. Sown on March 24, ready around July 7.
Warmth: Hardy: grows once days average 43°F.

Leek across the US, town by town

ScallionOutdoors Mar 20 to Sep 14; Under cover Feb 20 to Oct 12

Sow outdoors: Mar 20 to Sep 14
Under cover: Feb 20 to Oct 12
First harvest: About 44 days after sowing. Sown on March 20, ready around May 3.
Warmth: Hardy: grows once days average 41°F.

Scallion across the US, town by town

ShallotOutdoors Mar 16 to May 29; Under cover Feb 16 to Jun 26

Plant outdoors: Mar 16 to May 29
Under cover: Feb 16 to Jun 26
First harvest: About 78 days after planting. Planted on March 16, ready around June 2.
Warmth: Hardy: grows once days average 41°F.

Shallot across the US, town by town

Brassicas

CabbageOutdoors Mar 24 to Aug 8; Under cover Feb 24 to Sep 5

Sow outdoors: Mar 24 to Aug 8
Under cover: Feb 24 to Sep 5
First harvest: About 77 days after sowing. Sown on March 24, ready around June 9.
Warmth: Hardy: grows once days average 43°F.

Cabbage across the US, town by town

BroccoliOutdoors Mar 30 to Jun 28, and Jul 26 to Aug 10; Under cover Mar 2 to Aug 10, and Aug 23 to Sep 7

Sow outdoors: Mar 30 to Jun 28, and Jul 26 to Aug 10
Under cover: Mar 2 to Aug 10, and Aug 23 to Sep 7
First harvest: About 68 days after sowing. Sown on March 30, ready around June 6.
Warmth: Hardy: grows once days average 45°F.

Broccoli across the US, town by town

CauliflowerOutdoors Mar 24 to Jun 3; Under cover Feb 24 to Jul 1

Sow outdoors: Mar 24 to Jun 3
Under cover: Feb 24 to Jul 1
First harvest: About 84 days after sowing. Sown on March 24, ready around June 16.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Cauliflower across the US, town by town

Brussels sproutOutdoors Mar 24 to May 24; Under cover Feb 24 to Jun 21

Sow outdoors: Mar 24 to May 24
Under cover: Feb 24 to Jun 21
First harvest: About 122 days after sowing. Sown on March 24, ready around July 24.
Warmth: Hardy: grows once days average 43°F.

Brussels sprout across the US, town by town

KaleOutdoors Mar 30 to Aug 18; Under cover Mar 2 to Sep 15

Sow outdoors: Mar 30 to Aug 18
Under cover: Mar 2 to Sep 15
First harvest: About 60 days after sowing. Sown on March 30, ready around May 29.
Warmth: Hardy: grows once days average 45°F.

Kale across the US, town by town

Bok choyOutdoors Apr 5 to May 23, and Aug 2 to Sep 17; Under cover Mar 8 to Jun 20, and Jul 5 to Oct 15

Sow outdoors: Apr 5 to May 23, and Aug 2 to Sep 17
Under cover: Mar 8 to Jun 20, and Jul 5 to Oct 15
First harvest: About 37 days after sowing. Sown on April 5, ready around May 12.
Warmth: Hardy: grows once days average 46°F; bolts in hot weather.

Bok choy across the US, town by town

Herbs

BasilOutdoors Apr 12 to Aug 27; Under cover Mar 15 to Sep 24

Sow outdoors: Apr 12 to Aug 27
Under cover: Mar 15 to Sep 24
First harvest: About 44 days after sowing. Sown on April 12, ready around May 26.
Warmth: Tender: needs days averaging 46°F or more, and no frost.

Basil across the US, town by town

ParsleyOutdoors Mar 24 to Sep 2; Under cover Feb 24 to Sep 30

Sow outdoors: Mar 24 to Sep 2
Under cover: Feb 24 to Sep 30
First harvest: About 52 days after sowing. Sown on March 24, ready around May 15.
Warmth: Hardy: grows once days average 43°F.

Parsley across the US, town by town

CilantroOutdoors Mar 30 to May 23, and Aug 2 to Sep 16; Under cover Mar 2 to Jun 20, and Jul 5 to Oct 14

Sow outdoors: Mar 30 to May 23, and Aug 2 to Sep 16
Under cover: Mar 2 to Jun 20, and Jul 5 to Oct 14
First harvest: About 38 days after sowing. Sown on March 30, ready around May 7.
Warmth: Hardy: grows once days average 45°F; bolts in hot weather.

Cilantro across the US, town by town

ChivesOutdoors Mar 24 to Jun 9, and Jul 26 to Aug 17; Under cover Feb 24 to Sep 14

Sow outdoors: Mar 24 to Jun 9, and Jul 26 to Aug 17
Under cover: Feb 24 to Sep 14
First harvest: Crops every year once it’s established.
Warmth: Hardy: grows once days average 43°F.

Chives across the US, town by town

MintOutdoors Mar 30 to Oct 6; Under cover Mar 2 to Nov 3

Sow outdoors: Mar 30 to Oct 6
Under cover: Mar 2 to Nov 3
First harvest: Crops every year once it’s established.
Warmth: Hardy: grows once days average 45°F.

Mint across the US, town by town

Fruit

StrawberryOutdoors Mar 24 to May 24, and Jul 26 to Aug 14; Under cover Feb 24 to Jul 17, and Jul 26 to Aug 14, and Aug 23 to Sep 11

Plant outdoors: Mar 24 to May 24, and Jul 26 to Aug 14
Under cover: Feb 24 to Jul 17, and Jul 26 to Aug 14, and Aug 23 to Sep 11
First harvest: Crops every year once it’s established.
Warmth: Hardy: grows once days average 43°F.

Strawberry across the US, town by town

RaspberryOutdoors Nov 6 to Nov 27; Under cover Oct 9 to Dec 25

Plant outdoors: Nov 6 to Nov 27
Under cover: Oct 9 to Dec 25
First harvest: Crops every year once it’s established.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Raspberry across the US, town by town

RhubarbOutdoors Oct 28 to Nov 24; Under cover Sep 30 to Dec 22

Plant outdoors: Oct 28 to Nov 24
Under cover: Sep 30 to Dec 22
First harvest: Crops every year once it’s established.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Rhubarb across the US, town by town

Nearby

Questions about growing in Pittsburgh

When is the last frost in Pittsburgh?

On average around April 12, and the first autumn frost comes around November 7. In a cold spring a frost can come a week or two late, so tender plants are safest out a week after the date.

Can I grow tomatoes outdoors in Pittsburgh?

Yes. Plant them outdoors May 17 to Jun 11, and Jul 26 to Aug 6, or under cover Apr 19 to Jul 9, and Jul 26 to Aug 6, and Aug 23 to Sep 3.

What can I sow in Pittsburgh in November?

Outdoors: fava bean, garlic, raspberry, rhubarb.

How accurate are these dates?

They’re worked out from 30 years of climate data for this spot, adjusted for its height, so they’re a good guide for a typical year. Check the forecast before planting out anything tender.

Get these dates as reminders

Bia turns this calendar into a nudge when it’s time to sow, plant out and harvest, for your backyard or community garden plot in Pittsburgh. Free for 2 months.

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How these dates are worked out: climate records for this spot (ERA5-Land, 1995 to 2024), the local frost dates and the height above sea level turn a seed-packet date into a local one. Contains modified Copernicus Climate Change Service information; towns from GeoNames (CC BY 4.0). How sowing dates work