Maryland, US

Planting calendar for Baltimore

Last frost around March 26, first frost around November 21: about 240 frost-free days.

Last frost: March 26
First frost: November 21
Frost-free days: 240

Sow now: November

See the whole year

Outdoors

Fava bean
Garlic
Raspberry
Rhubarb

Under cover

Radish
Mint

The year at a glance

When each crop can be sown in Baltimore. 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 Baltimore, 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 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
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 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
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 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
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 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
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 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
Sweet corn	January: Not this month	February: Not this month	March: Not this month	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
Roots
Carrot	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 under cover	August: Sow outdoors and under cover	September: Sow under cover	October: Not this month	November: Not this month	December: Not this month
Beet	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 under cover	October: Not this month	November: Not this month	December: Not this month
Parsnip	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: Sow under cover	August: Sow under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Radish	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: Sow under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow outdoors and under cover	November: Sow under cover	December: Not this month
Potato	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: Not this month	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
Turnip	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: 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
Leaves
Lettuce	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: Not this month	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
Spinach	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: Not this month	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: 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
Arugula	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: Not this month	July: Sow under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Sow outdoors and 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 under cover	June: Not this month	July: Sow under cover	August: Sow under cover	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 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
Green bean	January: Not this month	February: Not this month	March: Not this month	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
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: Not this month	October: Sow under cover	November: Sow outdoors and under cover	December: Sow under cover
Pea	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: 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 under cover	June: Not this month	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: Not this month	October: Plant under cover	November: Plant outdoors and under cover	December: Plant under cover
Leek	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 under cover	August: Sow outdoors and under cover	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: Plant under cover	August: Plant under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Brassicas
Cabbage	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 under cover	October: Not this month	November: Not this month	December: Not this month
Broccoli	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 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: 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
Brussels sprout	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
Kale	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 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: Not this month	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 under cover	August: Sow outdoors and under cover	September: Sow outdoors and under cover	October: Not this month	November: Not this month	December: Not this month
Parsley	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
Cilantro	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: Not this month	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: 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: 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: 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 outdoors and under cover	November: Sow under cover	December: Not this month
Fruit
Strawberry	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: 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: Plant under cover	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 outdoors and 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 outdoors and under cover

Fruit rows show when to plant, not sow.

Crop by crop

Fruiting

TomatoOutdoors Apr 30 to May 25, and Jul 27 to Aug 19; Under cover Apr 2 to Sep 16

Sow outdoors: Apr 30 to May 25, and Jul 27 to Aug 19
Under cover: Apr 2 to Sep 16
First harvest: About 66 days after sowing. Sown on April 30, ready around July 5.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Tomato across the US, town by town

Chile pepperOutdoors Apr 29 to May 25, and Jul 27 to Aug 17; Under cover Apr 1 to Sep 14

Sow outdoors: Apr 29 to May 25, and Jul 27 to Aug 17
Under cover: Apr 1 to Sep 14
First harvest: About 84 days after sowing. Sown on April 29, ready around July 22.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Chile pepper across the US, town by town

Bell pepperOutdoors May 4 to May 30, and Jul 27 to Aug 19; Under cover Apr 6 to Sep 16

Sow outdoors: May 4 to May 30, and Jul 27 to Aug 19
Under cover: Apr 6 to Sep 16
First harvest: About 78 days after sowing. Sown on May 4, ready around July 21.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Bell pepper across the US, town by town

EggplantOutdoors May 4 to May 25, and Jul 27 to Aug 17; Under cover Apr 6 to Sep 14

Sow outdoors: May 4 to May 25, and Jul 27 to Aug 17
Under cover: Apr 6 to Sep 14
First harvest: About 90 days after sowing. Sown on May 4, ready around August 2.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Eggplant across the US, town by town

ZucchiniOutdoors Apr 29 to Jun 9, and Jul 27 to Sep 5; Under cover Apr 1 to Oct 3

Sow outdoors: Apr 29 to Jun 9, and Jul 27 to Sep 5
Under cover: Apr 1 to Oct 3
First harvest: About 43 days after sowing. Sown on April 29, ready around June 11.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Zucchini across the US, town by town

CucumberOutdoors Apr 29 to Jun 9, and Jul 27 to Sep 1; Under cover Apr 1 to Sep 29

Sow outdoors: Apr 29 to Jun 9, and Jul 27 to Sep 1
Under cover: Apr 1 to Sep 29
First harvest: About 48 days after sowing. Sown on April 29, ready around June 16.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Cucumber across the US, town by town

Winter squashOutdoors Apr 29 to May 30, and Jul 27 to Aug 20; Under cover Apr 1 to Sep 17

Sow outdoors: Apr 29 to May 30, and Jul 27 to Aug 20
Under cover: Apr 1 to Sep 17
First harvest: About 66 days after sowing. Sown on April 29, ready around July 4.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Winter squash across the US, town by town

Sweet cornOutdoors Apr 24 to May 30, and Jul 27 to Aug 21; Under cover Mar 27 to Sep 18

Sow outdoors: Apr 24 to May 30, and Jul 27 to Aug 21
Under cover: Mar 27 to Sep 18
First harvest: About 62 days after sowing. Sown on April 24, ready around June 25.
Warmth: Tender: needs days averaging 52°F or more, and no frost.

Sweet corn across the US, town by town

Roots

CarrotOutdoors Mar 20 to Jun 28, and Jul 27 to Aug 20; Under cover Feb 20 to Sep 17

Sow outdoors: Mar 20 to Jun 28, and Jul 27 to Aug 20
Under cover: Feb 20 to Sep 17
First harvest: About 76 days after sowing. Sown on March 20, ready around June 4.
Warmth: Hardy: grows once days average 45°F.

Carrot across the US, town by town

BeetOutdoors Mar 20 to Jul 3, and Jul 27 to Sep 3; Under cover Feb 20 to Oct 1

Sow outdoors: Mar 20 to Jul 3, and Jul 27 to Sep 3
Under cover: Feb 20 to Oct 1
First harvest: About 54 days after sowing. Sown on March 20, ready around May 13.
Warmth: Hardy: grows once days average 45°F.

Beet across the US, town by town

ParsnipOutdoors Mar 12 to May 28, and Jul 27 to Aug 2; Under cover Feb 12 to Jul 5, and Jul 27 to Aug 2, and Aug 24 to Aug 30

Sow outdoors: Mar 12 to May 28, and Jul 27 to Aug 2
Under cover: Feb 12 to Jul 5, and Jul 27 to Aug 2, and Aug 24 to Aug 30
First harvest: About 92 days after sowing. Sown on March 12, ready around June 12.
Warmth: Hardy: grows once days average 43°F.

Parsnip across the US, town by town

RadishOutdoors Mar 12 to May 15, and Aug 11 to Oct 11; Under cover Feb 12 to Jun 12, and Jul 14 to Nov 8

Sow outdoors: Mar 12 to May 15, and Aug 11 to Oct 11
Under cover: Feb 12 to Jun 12, and Jul 14 to Nov 8
First harvest: About 21 days after sowing. Sown on March 12, ready around April 2.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Radish across the US, town by town

PotatoOutdoors Mar 12 to May 7, and Jul 27 to Aug 21; Under cover Feb 12 to Jun 4, and Jun 29 to Sep 18

Plant outdoors: Mar 12 to May 7, and Jul 27 to Aug 21
Under cover: Feb 12 to Jun 4, and Jun 29 to Sep 18
First harvest: About 71 days after planting. Planted on March 12, ready around May 22.
Warmth: Hardy: grows once days average 43°F.

Potato across the US, town by town

TurnipOutdoors Mar 12 to May 23, and Aug 3 to Sep 15; Under cover Feb 12 to Jun 20, and Jul 6 to Oct 13

Sow outdoors: Mar 12 to May 23, and Aug 3 to Sep 15
Under cover: Feb 12 to Jun 20, and Jul 6 to Oct 13
First harvest: About 43 days after sowing. Sown on March 12, ready around April 24.
Warmth: Hardy: grows once days average 43°F.

Turnip across the US, town by town

Leaves

LettuceOutdoors Mar 14 to May 8, and Aug 18 to Sep 10; Under cover Feb 14 to Jun 5, and Jul 21 to Oct 8

Sow outdoors: Mar 14 to May 8, and Aug 18 to Sep 10
Under cover: Feb 14 to Jun 5, and Jul 21 to Oct 8
First harvest: About 51 days after sowing. Sown on March 14, ready around May 4.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Lettuce across the US, town by town

SpinachOutdoors Mar 12 to May 8, and Aug 18 to Oct 6; Under cover Feb 12 to Jun 5, and Jul 21 to Nov 3

Sow outdoors: Mar 12 to May 8, and Aug 18 to Oct 6
Under cover: Feb 12 to Jun 5, and Jul 21 to Nov 3
First harvest: About 33 days after sowing. Sown on March 12, ready around April 14.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Spinach across the US, town by town

Swiss chardOutdoors Mar 20 to Sep 15; Under cover Feb 20 to Oct 13

Sow outdoors: Mar 20 to Sep 15
Under cover: Feb 20 to Oct 13
First harvest: About 47 days after sowing. Sown on March 20, ready around May 6.
Warmth: Hardy: grows once days average 45°F.

Swiss chard across the US, town by town

ArugulaOutdoors Mar 12 to May 8, and Aug 18 to Oct 7; Under cover Feb 12 to Jun 5, and Jul 21 to Nov 4

Sow outdoors: Mar 12 to May 8, and Aug 18 to Oct 7
Under cover: Feb 12 to Jun 5, and Jul 21 to Nov 4
First harvest: About 29 days after sowing. Sown on March 12, ready around April 10.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Arugula across the US, town by town

CeleryOutdoors Mar 7 to May 6, and Jul 27 to Aug 5; Under cover Feb 7 to Jun 3, and Jun 29 to Jul 8, and Jul 27 to Aug 5, and Aug 24 to Sep 2

Sow outdoors: Mar 7 to May 6, and Jul 27 to Aug 5
Under cover: Feb 7 to Jun 3, and Jun 29 to Jul 8, and Jul 27 to Aug 5, and Aug 24 to Sep 2
First harvest: About 88 days after sowing. Sown on March 7, ready around June 3.
Warmth: Hardy: grows once days average 41°F.

Celery across the US, town by town

Beans and peas

Runner beanOutdoors Apr 24 to Jun 9, and Jul 27 to Aug 25; Under cover Mar 27 to Sep 22

Sow outdoors: Apr 24 to Jun 9, and Jul 27 to Aug 25
Under cover: Mar 27 to Sep 22
First harvest: About 59 days after sowing. Sown on April 24, ready around June 22.
Warmth: Tender: needs days averaging 52°F or more, and no frost.

Runner bean across the US, town by town

Green beanOutdoors Apr 24 to Jun 24, and Jul 27 to Sep 3; Under cover Mar 27 to Oct 1

Sow outdoors: Apr 24 to Jun 24, and Jul 27 to Sep 3
Under cover: Mar 27 to Oct 1
First harvest: About 50 days after sowing. Sown on April 24, ready around June 13.
Warmth: Tender: needs days averaging 52°F or more, and no frost.

Green bean across the US, town by town

Fava beanOutdoors Oct 29 to Nov 26; Under cover Oct 1 to Dec 24

Sow outdoors: Oct 29 to Nov 26
Under cover: Oct 1 to Dec 24
First harvest: About 220 days after sowing. Sown on October 29, ready around June 6.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Fava bean across the US, town by town

PeaOutdoors Mar 12 to May 15, and Aug 11 to Aug 26; Under cover Feb 12 to Jun 12, and Jul 14 to Jul 29, and Aug 11 to Aug 26, and Sep 8 to Sep 23

Sow outdoors: Mar 12 to May 15, and Aug 11 to Aug 26
Under cover: Feb 12 to Jun 12, and Jul 14 to Jul 29, and Aug 11 to Aug 26, and Sep 8 to Sep 23
First harvest: About 57 days after sowing. Sown on March 12, ready around May 8.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Pea across the US, town by town

Onion family

OnionOutdoors Mar 10 to Apr 30; Under cover Feb 10 to May 28

Plant outdoors: Mar 10 to Apr 30
Under cover: Feb 10 to May 28
First harvest: About 98 days after planting. Planted on March 10, ready around June 16.
Warmth: Hardy: grows once days average 43°F.

Onion across the US, town by town

GarlicOutdoors Oct 29 to Dec 1; Under cover Oct 1 to Dec 29

Plant outdoors: Oct 29 to Dec 1
Under cover: Oct 1 to Dec 29
First harvest: About 250 days after planting. Planted on October 29, ready around July 6.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Garlic across the US, town by town

LeekOutdoors Mar 12 to Jun 27, and Jul 27 to Aug 7; Under cover Feb 12 to Aug 7, and Aug 24 to Sep 4

Sow outdoors: Mar 12 to Jun 27, and Jul 27 to Aug 7
Under cover: Feb 12 to Aug 7, and Aug 24 to Sep 4
First harvest: About 105 days after sowing. Sown on March 12, ready around June 25.
Warmth: Hardy: grows once days average 43°F.

Leek across the US, town by town

ScallionOutdoors Mar 7 to Sep 24; Under cover Feb 7 to Oct 22

Sow outdoors: Mar 7 to Sep 24
Under cover: Feb 7 to Oct 22
First harvest: About 46 days after sowing. Sown on March 7, ready around April 22.
Warmth: Hardy: grows once days average 41°F.

Scallion across the US, town by town

ShallotOutdoors Mar 3 to May 16, and Jul 27 to Aug 5; Under cover Feb 3 to Jun 13, and Jun 29 to Jul 8, and Jul 27 to Aug 5, and Aug 24 to Sep 2

Plant outdoors: Mar 3 to May 16, and Jul 27 to Aug 5
Under cover: Feb 3 to Jun 13, and Jun 29 to Jul 8, and Jul 27 to Aug 5, and Aug 24 to Sep 2
First harvest: About 82 days after planting. Planted on March 3, ready around May 24.
Warmth: Hardy: grows once days average 41°F.

Shallot across the US, town by town

Brassicas

CabbageOutdoors Mar 12 to Jun 21, and Jul 6 to Jul 12, and Jul 27 to Aug 19; Under cover Feb 12 to Sep 16

Sow outdoors: Mar 12 to Jun 21, and Jul 6 to Jul 12, and Jul 27 to Aug 19
Under cover: Feb 12 to Sep 16
First harvest: About 78 days after sowing. Sown on March 12, ready around May 29.
Warmth: Hardy: grows once days average 43°F.

Cabbage across the US, town by town

BroccoliOutdoors Mar 20 to Jun 18, and Jul 27 to Aug 21; Under cover Feb 20 to Sep 18

Sow outdoors: Mar 20 to Jun 18, and Jul 27 to Aug 21
Under cover: Feb 20 to Sep 18
First harvest: About 69 days after sowing. Sown on March 20, ready around May 28.
Warmth: Hardy: grows once days average 45°F.

Broccoli across the US, town by town

CauliflowerOutdoors Mar 12 to May 15; Under cover Feb 12 to Jun 12

Sow outdoors: Mar 12 to May 15
Under cover: Feb 12 to Jun 12
First harvest: About 85 days after sowing. Sown on March 12, ready around June 5.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Cauliflower across the US, town by town

Brussels sproutOutdoors Mar 12 to May 12; Under cover Feb 12 to Jun 9

Sow outdoors: Mar 12 to May 12
Under cover: Feb 12 to Jun 9
First harvest: About 121 days after sowing. Sown on March 12, ready around July 11.
Warmth: Hardy: grows once days average 43°F.

Brussels sprout across the US, town by town

KaleOutdoors Mar 20 to Jul 3, and Jul 27 to Aug 29; Under cover Feb 20 to Sep 26

Sow outdoors: Mar 20 to Jul 3, and Jul 27 to Aug 29
Under cover: Feb 20 to Sep 26
First harvest: About 62 days after sowing. Sown on March 20, ready around May 21.
Warmth: Hardy: grows once days average 45°F.

Kale across the US, town by town

Bok choyOutdoors Mar 26 to May 8, and Aug 18 to Sep 27; Under cover Feb 26 to Jun 5, and Jul 21 to Oct 25

Sow outdoors: Mar 26 to May 8, and Aug 18 to Sep 27
Under cover: Feb 26 to Jun 5, and Jul 21 to Oct 25
First harvest: About 37 days after sowing. Sown on March 26, ready around May 2.
Warmth: Hardy: grows once days average 46°F; bolts in hot weather.

Bok choy across the US, town by town

Herbs

BasilOutdoors Mar 26 to Jun 25, and Jul 27 to Sep 7; Under cover Feb 26 to Oct 5

Sow outdoors: Mar 26 to Jun 25, and Jul 27 to Sep 7
Under cover: Feb 26 to Oct 5
First harvest: About 40 days after sowing. Sown on March 26, ready around May 5.
Warmth: Tender: needs days averaging 46°F or more, and no frost.

Basil across the US, town by town

ParsleyOutdoors Mar 12 to Sep 13; Under cover Feb 12 to Oct 11

Sow outdoors: Mar 12 to Sep 13
Under cover: Feb 12 to Oct 11
First harvest: About 54 days after sowing. Sown on March 12, ready around May 5.
Warmth: Hardy: grows once days average 43°F.

Parsley across the US, town by town

CilantroOutdoors Mar 20 to May 8, and Aug 18 to Sep 26; Under cover Feb 20 to Jun 5, and Jul 21 to Oct 24

Sow outdoors: Mar 20 to May 8, and Aug 18 to Sep 26
Under cover: Feb 20 to Jun 5, and Jul 21 to Oct 24
First harvest: About 40 days after sowing. Sown on March 20, ready around April 29.
Warmth: Hardy: grows once days average 45°F; bolts in hot weather.

Cilantro across the US, town by town

ChivesOutdoors Mar 12 to May 28, and Jul 27 to Aug 28; Under cover Feb 12 to Sep 25

Sow outdoors: Mar 12 to May 28, and Jul 27 to Aug 28
Under cover: Feb 12 to Sep 25
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 20 to Oct 16; Under cover Feb 20 to Nov 13

Sow outdoors: Mar 20 to Oct 16
Under cover: Feb 20 to Nov 13
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 12 to May 12, and Jul 27 to Aug 26; Under cover Feb 12 to Jun 9, and Jun 29 to Sep 23

Plant outdoors: Mar 12 to May 12, and Jul 27 to Aug 26
Under cover: Feb 12 to Jun 9, and Jun 29 to Sep 23
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 16 to Dec 12; Under cover Oct 19 to Jan 9

Plant outdoors: Nov 16 to Dec 12
Under cover: Oct 19 to Jan 9
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 Nov 6 to Dec 7; Under cover Oct 9 to Jan 4

Plant outdoors: Nov 6 to Dec 7
Under cover: Oct 9 to Jan 4
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 Baltimore

When is the last frost in Baltimore?

On average around March 26, and the first autumn frost comes around November 21. 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 Baltimore?

Yes. Plant them outdoors Apr 30 to May 25, and Jul 27 to Aug 19, or under cover Apr 2 to Sep 16.

What can I sow in Baltimore in November?

Outdoors: fava bean, garlic, raspberry, rhubarb. Under cover: radish, mint.

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 Baltimore. 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