Colorado, US

Planting calendar for Aurora, Colorado

Last frost around May 5, first frost around October 14: about 162 frost-free days.

Last frost: May 5
First frost: October 14
Frost-free days: 162

Sow now: November

See the whole year

Outdoors

Raspberry

Under cover

Garlic
Rhubarb

The year at a glance

When each crop can be sown in Aurora, Colorado. 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 Aurora, Colorado, 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: Not this month	May: Sow 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
Chile pepper	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Sow 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
Bell pepper	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Sow 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
Eggplant	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Sow 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
Zucchini	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Sow 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
Cucumber	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Sow 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
Winter squash	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Sow 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
Sweet corn	January: Not this month	February: Not this month	March: Not this month	April: Not this month	May: Sow 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
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 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 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 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
Potato	January: Not this month	February: Not this month	March: Plant 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
Turnip	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
Leaves
Lettuce	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 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 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 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: Not this month	March: Sow 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: Not this month	May: Sow under cover	June: Sow outdoors and under cover	July: Sow outdoors and under cover	August: Sow under cover	September: Not this month	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: Not this month	May: Sow 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: Sow under cover	April: Sow outdoors and under cover	May: Sow 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
Pea	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: Not this month	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Onion family
Onion	January: Not this month	February: Not this month	March: Plant 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 under cover	December: Not this month
Leek	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 under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Scallion	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
Shallot	January: Not this month	February: Not this month	March: Plant under cover	April: Plant outdoors and under cover	May: Plant outdoors and under cover	June: Plant outdoors and under cover	July: Plant under cover	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 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 outdoors and under cover	August: Sow under cover	September: Not this month	October: Not this month	November: Not this month	December: Not this month
Cauliflower	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: 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 under cover	April: Sow outdoors and under cover	May: Sow outdoors and under cover	June: Sow outdoors and 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: Not this month	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 under cover	October: Not this month	November: Not this month	December: Not this month
Herbs
Basil	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
Parsley	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
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 under cover	October: Not this month	November: Not this month	December: Not this month
Chives	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 under cover	September: Not this month	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 under cover	April: Plant outdoors and under cover	May: Plant outdoors and under cover	June: Plant outdoors and 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
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: Plant under cover	October: Plant outdoors and under cover	November: Plant outdoors and under cover	December: Not this month
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: Plant under cover	October: Plant outdoors and under cover	November: Plant under cover	December: Not this month

Fruit rows show when to plant, not sow.

Crop by crop

Fruiting

TomatoOutdoors Jun 9 to Jul 4; Under cover May 12 to Aug 1

Sow outdoors: Jun 9 to Jul 4
Under cover: May 12 to Aug 1
First harvest: About 66 days after sowing. Sown on June 9, ready around August 14.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Tomato across the US, town by town

Chile pepperOutdoors Jun 8 to Jul 4; Under cover May 11 to Aug 1

Sow outdoors: Jun 8 to Jul 4
Under cover: May 11 to Aug 1
First harvest: About 84 days after sowing. Sown on June 8, ready around August 31.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Chile pepper across the US, town by town

Bell pepperOutdoors Jun 13 to Jul 9; Under cover May 16 to Aug 6

Sow outdoors: Jun 13 to Jul 9
Under cover: May 16 to Aug 6
First harvest: About 78 days after sowing. Sown on June 13, ready around August 30.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Bell pepper across the US, town by town

EggplantOutdoors Jun 13 to Jul 4; Under cover May 16 to Aug 1

Sow outdoors: Jun 13 to Jul 4
Under cover: May 16 to Aug 1
First harvest: About 90 days after sowing. Sown on June 13, ready around September 11.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Eggplant across the US, town by town

ZucchiniOutdoors Jun 8 to Aug 16; Under cover May 11 to Sep 13

Sow outdoors: Jun 8 to Aug 16
Under cover: May 11 to Sep 13
First harvest: About 36 days after sowing. Sown on June 8, ready around July 14.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Zucchini across the US, town by town

CucumberOutdoors Jun 8 to Aug 12; Under cover May 11 to Sep 9

Sow outdoors: Jun 8 to Aug 12
Under cover: May 11 to Sep 9
First harvest: About 42 days after sowing. Sown on June 8, ready around July 20.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Cucumber across the US, town by town

Winter squashOutdoors Jun 8 to Jul 9; Under cover May 11 to Aug 6

Sow outdoors: Jun 8 to Jul 9
Under cover: May 11 to Aug 6
First harvest: About 66 days after sowing. Sown on June 8, ready around August 13.
Warmth: Tender: needs days averaging 54°F or more, and no frost.

Winter squash across the US, town by town

Sweet cornOutdoors Jun 3 to Jul 9; Under cover May 6 to Aug 6

Sow outdoors: Jun 3 to Jul 9
Under cover: May 6 to Aug 6
First harvest: About 60 days after sowing. Sown on June 3, ready around August 2.
Warmth: Tender: needs days averaging 52°F or more, and no frost.

Sweet corn across the US, town by town

Roots

CarrotOutdoors Apr 14 to Jul 23; Under cover Mar 17 to Aug 20

Sow outdoors: Apr 14 to Jul 23
Under cover: Mar 17 to Aug 20
First harvest: About 75 days after sowing. Sown on April 14, ready around June 28.
Warmth: Hardy: grows once days average 45°F.

Carrot across the US, town by town

BeetOutdoors Apr 14 to Aug 12; Under cover Mar 17 to Sep 9

Sow outdoors: Apr 14 to Aug 12
Under cover: Mar 17 to Sep 9
First harvest: About 53 days after sowing. Sown on April 14, ready around June 6.
Warmth: Hardy: grows once days average 45°F.

Beet across the US, town by town

ParsnipOutdoors Apr 7 to Jun 23; Under cover Mar 10 to Jul 21

Sow outdoors: Apr 7 to Jun 23
Under cover: Mar 10 to Jul 21
First harvest: About 91 days after sowing. Sown on April 7, ready around July 7.
Warmth: Hardy: grows once days average 43°F.

Parsnip across the US, town by town

RadishOutdoors Apr 7 to Jun 16, and Jul 17 to Sep 18; Under cover Mar 10 to Oct 16

Sow outdoors: Apr 7 to Jun 16, and Jul 17 to Sep 18
Under cover: Mar 10 to Oct 16
First harvest: About 20 days after sowing. Sown on April 7, ready around April 27.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Radish across the US, town by town

PotatoOutdoors Apr 7 to Jun 2; Under cover Mar 10 to Jun 30

Plant outdoors: Apr 7 to Jun 2
Under cover: Mar 10 to Jun 30
First harvest: About 70 days after planting. Planted on April 7, ready around June 16.
Warmth: Hardy: grows once days average 43°F.

Potato across the US, town by town

TurnipOutdoors Apr 7 to Aug 23; Under cover Mar 10 to Sep 20

Sow outdoors: Apr 7 to Aug 23
Under cover: Mar 10 to Sep 20
First harvest: About 42 days after sowing. Sown on April 7, ready around May 19.
Warmth: Hardy: grows once days average 43°F.

Turnip across the US, town by town

Leaves

LettuceOutdoors Apr 9 to Jun 5, and Jul 28 to Aug 19; Under cover Mar 12 to Sep 16

Sow outdoors: Apr 9 to Jun 5, and Jul 28 to Aug 19
Under cover: Mar 12 to Sep 16
First harvest: About 51 days after sowing. Sown on April 9, ready around May 30.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Lettuce across the US, town by town

SpinachOutdoors Apr 7 to Jun 5, and Jul 28 to Sep 13; Under cover Mar 10 to Oct 11

Sow outdoors: Apr 7 to Jun 5, and Jul 28 to Sep 13
Under cover: Mar 10 to Oct 11
First harvest: About 32 days after sowing. Sown on April 7, ready around May 9.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Spinach across the US, town by town

Swiss chardOutdoors Apr 14 to Aug 23; Under cover Mar 17 to Sep 20

Sow outdoors: Apr 14 to Aug 23
Under cover: Mar 17 to Sep 20
First harvest: About 46 days after sowing. Sown on April 14, ready around May 30.
Warmth: Hardy: grows once days average 45°F.

Swiss chard across the US, town by town

ArugulaOutdoors Apr 7 to Jun 5, and Jul 28 to Sep 14; Under cover Mar 10 to Oct 12

Sow outdoors: Apr 7 to Jun 5, and Jul 28 to Sep 14
Under cover: Mar 10 to Oct 12
First harvest: About 28 days after sowing. Sown on April 7, ready around May 5.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Arugula across the US, town by town

CeleryOutdoors Apr 3 to Jun 2; Under cover Mar 6 to Jun 30

Sow outdoors: Apr 3 to Jun 2
Under cover: Mar 6 to Jun 30
First harvest: About 87 days after sowing. Sown on April 3, ready around June 29.
Warmth: Hardy: grows once days average 41°F.

Celery across the US, town by town

Beans and peas

Runner beanOutdoors Jun 3 to Aug 5; Under cover May 6 to Sep 2

Sow outdoors: Jun 3 to Aug 5
Under cover: May 6 to Sep 2
First harvest: About 54 days after sowing. Sown on June 3, ready around July 27.
Warmth: Tender: needs days averaging 52°F or more, and no frost.

Runner bean across the US, town by town

Green beanOutdoors Jun 3 to Aug 14; Under cover May 6 to Sep 11

Sow outdoors: Jun 3 to Aug 14
Under cover: May 6 to Sep 11
First harvest: About 42 days after sowing. Sown on June 3, ready around July 15.
Warmth: Tender: needs days averaging 52°F or more, and no frost.

Green bean across the US, town by town

Fava beanOutdoors Mar 30 to Apr 20; Under cover Mar 2 to May 18

Sow outdoors: Mar 30 to Apr 20
Under cover: Mar 2 to May 18
First harvest: About 220 days after sowing. Sown on March 30, ready around November 5.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Fava bean across the US, town by town

PeaOutdoors Apr 7 to Jun 16; Under cover Mar 10 to Jul 14

Sow outdoors: Apr 7 to Jun 16
Under cover: Mar 10 to Jul 14
First harvest: About 56 days after sowing. Sown on April 7, ready around June 2.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Pea across the US, town by town

Onion family

OnionOutdoors Apr 6 to May 27; Under cover Mar 9 to Jun 24

Plant outdoors: Apr 6 to May 27
Under cover: Mar 9 to Jun 24
First harvest: About 98 days after planting. Planted on April 6, ready around July 13.
Warmth: Hardy: grows once days average 43°F.

Onion across the US, town by town

GarlicOutdoors Oct 7 to Nov 1; Under cover Sep 9 to Nov 29

Plant outdoors: Oct 7 to Nov 1
Under cover: Sep 9 to Nov 29
First harvest: About 250 days after planting. Planted on October 7, ready around June 14.
Warmth: Hardy: goes in as the weather cools, and grows on through winter.

Garlic across the US, town by town

LeekOutdoors Apr 7 to Jul 23; Under cover Mar 10 to Aug 20

Sow outdoors: Apr 7 to Jul 23
Under cover: Mar 10 to Aug 20
First harvest: About 104 days after sowing. Sown on April 7, ready around July 20.
Warmth: Hardy: grows once days average 43°F.

Leek across the US, town by town

ScallionOutdoors Apr 3 to Sep 1; Under cover Mar 6 to Sep 29

Sow outdoors: Apr 3 to Sep 1
Under cover: Mar 6 to Sep 29
First harvest: About 45 days after sowing. Sown on April 3, ready around May 18.
Warmth: Hardy: grows once days average 41°F.

Scallion across the US, town by town

ShallotOutdoors Mar 30 to Jun 12; Under cover Mar 2 to Jul 10

Plant outdoors: Mar 30 to Jun 12
Under cover: Mar 2 to Jul 10
First harvest: About 79 days after planting. Planted on March 30, ready around June 17.
Warmth: Hardy: grows once days average 41°F.

Shallot across the US, town by town

Brassicas

CabbageOutdoors Apr 7 to Aug 7; Under cover Mar 10 to Sep 4

Sow outdoors: Apr 7 to Aug 7
Under cover: Mar 10 to Sep 4
First harvest: About 77 days after sowing. Sown on April 7, ready around June 23.
Warmth: Hardy: grows once days average 43°F.

Cabbage across the US, town by town

BroccoliOutdoors Apr 14 to Jul 13; Under cover Mar 17 to Aug 10

Sow outdoors: Apr 14 to Jul 13
Under cover: Mar 17 to Aug 10
First harvest: About 68 days after sowing. Sown on April 14, ready around June 21.
Warmth: Hardy: grows once days average 45°F.

Broccoli across the US, town by town

CauliflowerOutdoors Apr 7 to Jun 16; Under cover Mar 10 to Jul 14

Sow outdoors: Apr 7 to Jun 16
Under cover: Mar 10 to Jul 14
First harvest: About 84 days after sowing. Sown on April 7, ready around June 30.
Warmth: Hardy: grows once days average 43°F; bolts in hot weather.

Cauliflower across the US, town by town

Brussels sproutOutdoors Apr 7 to Jun 7; Under cover Mar 10 to Jul 5

Sow outdoors: Apr 7 to Jun 7
Under cover: Mar 10 to Jul 5
First harvest: About 122 days after sowing. Sown on April 7, ready around August 7.
Warmth: Hardy: grows once days average 43°F.

Brussels sprout across the US, town by town

KaleOutdoors Apr 14 to Aug 7; Under cover Mar 17 to Sep 4

Sow outdoors: Apr 14 to Aug 7
Under cover: Mar 17 to Sep 4
First harvest: About 61 days after sowing. Sown on April 14, ready around June 14.
Warmth: Hardy: grows once days average 45°F.

Kale across the US, town by town

Bok choyOutdoors Apr 20 to Jun 5, and Jul 28 to Sep 5; Under cover Mar 23 to Oct 3

Sow outdoors: Apr 20 to Jun 5, and Jul 28 to Sep 5
Under cover: Mar 23 to Oct 3
First harvest: About 37 days after sowing. Sown on April 20, ready around May 27.
Warmth: Hardy: grows once days average 46°F; bolts in hot weather.

Bok choy across the US, town by town

Herbs

BasilOutdoors May 5 to Aug 18; Under cover Apr 7 to Sep 15

Sow outdoors: May 5 to Aug 18
Under cover: Apr 7 to Sep 15
First harvest: About 45 days after sowing. Sown on May 5, ready around June 19.
Warmth: Tender: needs days averaging 46°F or more, and no frost.

Basil across the US, town by town

ParsleyOutdoors Apr 7 to Aug 22; Under cover Mar 10 to Sep 19

Sow outdoors: Apr 7 to Aug 22
Under cover: Mar 10 to Sep 19
First harvest: About 52 days after sowing. Sown on April 7, ready around May 29.
Warmth: Hardy: grows once days average 43°F.

Parsley across the US, town by town

CilantroOutdoors Apr 14 to Jun 5, and Jul 28 to Sep 3; Under cover Mar 17 to Oct 1

Sow outdoors: Apr 14 to Jun 5, and Jul 28 to Sep 3
Under cover: Mar 17 to Oct 1
First harvest: About 39 days after sowing. Sown on April 14, ready around May 23.
Warmth: Hardy: grows once days average 45°F; bolts in hot weather.

Cilantro across the US, town by town

ChivesOutdoors Apr 7 to Jun 23, and Jul 31 to Aug 6; Under cover Mar 10 to Jul 21, and Jul 31 to Aug 6, and Aug 28 to Sep 3

Sow outdoors: Apr 7 to Jun 23, and Jul 31 to Aug 6
Under cover: Mar 10 to Jul 21, and Jul 31 to Aug 6, and Aug 28 to Sep 3
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 Apr 14 to Sep 22; Under cover Mar 17 to Oct 20

Sow outdoors: Apr 14 to Sep 22
Under cover: Mar 17 to Oct 20
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 Apr 7 to Jun 7; Under cover Mar 10 to Jul 5

Plant outdoors: Apr 7 to Jun 7
Under cover: Mar 10 to Jul 5
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 Oct 21 to Nov 7; Under cover Sep 23 to Oct 10, and Oct 21 to Nov 7, and Nov 18 to Dec 5

Plant outdoors: Oct 21 to Nov 7
Under cover: Sep 23 to Oct 10, and Oct 21 to Nov 7, and Nov 18 to Dec 5
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 14 to Nov 5; Under cover Sep 16 to Dec 3

Plant outdoors: Oct 14 to Nov 5
Under cover: Sep 16 to Dec 3
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 Aurora, Colorado

When is the last frost in Aurora, Colorado?

On average around May 5, and the first autumn frost comes around October 14. 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 Aurora, Colorado?

Yes. Plant them outdoors Jun 9 to Jul 4, or under cover May 12 to Aug 1.

What can I sow in Aurora, Colorado in November?

Outdoors: raspberry. Under cover: garlic, 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 Aurora, Colorado. 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