Planting calendar for Cheyenne, Wyoming

Dates from 30 years of records at the Cheyenne WFO weather station, 1.1 miles from Cheyenne, worked out crop by crop with the same method as the Year Round Garden app.

Cheyenne at a glance

Weather station: Cheyenne WFO · 1.1 mi
USDA zone: 5b
Last spring frost: typically May 14; 1 year in 10 after May 28
First fall frost: typically Oct 1; 1 year in 10 before Sep 17
Frost-free season: about 140 days
Hottest month: July: highs 83°F, nights 56°F
Coldest month: February: highs 41°F, nights 18°F
Rain: 16 in. a year, most in May, June and July

What shapes the seasons here

The last spring frost in Cheyenne typically comes around May 14, but 1 year in 10 it comes after May 28. The first fall frost typically arrives around Oct 1. That leaves about 140 frost-free days for tender crops like tomatoes, peppers and squash.

Summers are mild, with highs around 83°F in July, so cool-season crops last longer here than in hotter places: leaf lettuce is best planted Apr 21–May 5, Jul 4–Aug 14.

Cheyenne gets about 16 inches of rain a year, most of it in May, June and July.

121 of the 174 crops in the app grow here; 53 need a different climate (listed near the bottom).

When to plant the most popular crops

JFMAMJJASOND

Tomato (slicing)

Tomato (cherry & grape)

Pepper (sweet / bell)

Cucumber (slicing)

Summer squash & zucchini

Bean (bush snap)

Sweet corn

Potato

Pea (snap & snow)

Lettuce (leaf & mesclun)

Spinach

Kale

Collard greens

Broccoli

Cabbage

Carrot

Radish

Onion (bulbing)

Garlic

Cilantro

Strawberry

Best Can plant Start indoors

Get these dates as reminders for your exact yard

The free Year Round Garden app uses the weather station nearest your own address, not just the city. It reminds you when to start seeds, plant and harvest, sends frost and storm alerts from the National Weather Service, and keeps a garden journal. No account needed, in English and Spanish.

Download on the App Store Free for up to 5 plants on iPhone and Android.

What to plant in Cheyenne, month by month

January0

Too cold to plant outdoors. Plan beds, order seeds and start the ones listed indoors.

Start seeds indoors

Pansy / viola

February0

Too cold to plant outdoors. Plan beds, order seeds and start the ones listed indoors.

Start seeds indoors

Celeriac (celery root), Leek, Parsley, Snapdragon

March0

Too cold to plant outdoors. Plan beds, order seeds and start the ones listed indoors.

Start seeds indoors

Artichoke, Broccoli, Brussels sprouts, Cabbage, Cauliflower, Celeriac (celery root), Celery, Onion (bulbing), Catnip, Rosemary, Statice, Stock

April43

Best time to plant

Vegetables: Arugula, Beet, Broccoli, Brussels sprouts, Cabbage, Carrot, Cauliflower, Chinese broccoli (gai lan), Collard greens, Daikon radish, Endive & escarole, Fava bean, Green onion / scallion, Kale, Kohlrabi, Leek, Lettuce (leaf & mesclun), Mustard greens, Parsnip, Pea (shelling / English), Pea (snap & snow), Radicchio, Radish, Rutabaga, Salsify, Shallot, Spinach, Swiss chard, Turnip, Watercress

Herbs: Caraway, Chamomile, Parsley, Sorrel (French / garden)

Fruit: Blackberry, Grape (bunch), Raspberry

Flowers: Bachelor's button (cornflower), California poppy, Larkspur, Pansy / viola, Snapdragon, Sweet pea (flower)

Can also plant

Asparagus, Broccoli raab (rapini), Mache (corn salad), Onion (bulbing), Rhubarb, Strawberry, Coreopsis (tickseed)

Start seeds indoors

Leek, Pepper (sweet / bell), Tomato (cherry & grape), Tomato (early / short-season), Tomato (paste / determinate), Tomato (slicing), Bee balm (bergamot), Chives, Feverfew, Garlic chives, Lavender, Lemon balm, Lovage, Marjoram, Oregano, Parsley, Sage, Thyme, Winter savory, Ground cherry, Annual salvia, Purple coneflower (echinacea), Snapdragon, Statice, Strawflower

May39

Best time to plant

Vegetables: Artichoke, Arugula, Asparagus, Beet, Carrot, Cauliflower, Celeriac (celery root), Celery, Chickpea / garbanzo, Chinese broccoli (gai lan), Daikon radish, Endive & escarole, Fennel (bulb), Garden cress, Onion (bulbing), Parsnip, Potato, Radish, Rhubarb, Salsify, Sunchoke (Jerusalem artichoke), Swiss chard, Tomato (early / short-season), Watercress

Herbs: Caraway, Catnip, Dill, Lemon balm, Lovage, Parsley, Sorrel (French / garden), Summer savory

Fruit: Grape (bunch), Strawberry

Flowers: Coreopsis (tickseed), Statice, Stock, Strawflower, Sweet alyssum

Can also plant

Bok choy / pak choi, Broccoli, Broccoli raab (rapini), Brussels sprouts, Cabbage, Collard greens, Green onion / scallion, Kale, Kohlrabi, Komatsuna (mustard spinach), Leek, Lettuce (leaf & mesclun), Lettuce (romaine & head), Mustard greens, Napa / Chinese cabbage, Pea (shelling / English), Pea (snap & snow), Radicchio, Rutabaga, Shallot, Spinach, Turnip, Anise hyssop, Bee balm (bergamot), Borage, Chamomile, Chervil, Chives, Cilantro, Fenugreek (methi), Feverfew, Garlic chives, Lavender, Mint, Oregano, Rosemary, Sage, Tarragon (French), Thyme, Winter savory, Blackberry, Raspberry, Bachelor's button (cornflower), Black-eyed Susan, Calendula, California poppy, Larkspur, Milkweed (native), Pansy / viola, Purple coneflower (echinacea), Snapdragon, Sweet pea (flower)

Start seeds indoors

Broccoli, Brussels sprouts, Cabbage, Cauliflower, Lettuce (romaine & head), Tomatillo, Tomato (cherry & grape), Tomato (early / short-season), Tomato (paste / determinate), Anise hyssop, Bee balm (bergamot), Chives, Feverfew, Garlic chives, Lemon balm, Oregano, Parsley, Sage, Shiso (perilla), Thyme, Winter savory, Cucamelon / mouse melon, Ground cherry, Annual salvia, Marigold, Milkweed (native), Pansy / viola, Statice, Stock, Strawflower

June68

Best time to plant

Vegetables: Armenian cucumber, Asparagus, Bean (bush snap), Bean (pole), Bitter melon, Brussels sprouts, Cabbage, Cauliflower, Celeriac (celery root), Cucumber (pickling), Cucumber (slicing), Endive & escarole, Fava bean, Fennel (bulb), Leek, Napa / Chinese cabbage, New Zealand spinach, Onion (bulbing), Pepper (sweet / bell), Potato, Rhubarb, Rutabaga, Shallot, Summer squash & zucchini, Sweet corn, Tomatillo, Tomato (cherry & grape), Tomato (early / short-season), Tomato (paste / determinate), Tomato (slicing)

Herbs: Anise hyssop, Bee balm (bergamot), Borage, Caraway, Chives, Epazote, Feverfew, Garlic chives, Lavender, Lemon balm, Lemon verbena, Lovage, Marjoram, Mint, Oregano, Parsley, Rosemary, Sage, Shiso (perilla), Summer savory, Tarragon (French), Thyme, Winter savory

Fruit: Cucamelon / mouse melon, Ground cherry, Strawberry

Flowers: Bachelor's button (cornflower), Black-eyed Susan, California poppy, Cleome (spider flower), Coreopsis (tickseed), Milkweed (native), Nasturtium, Purple coneflower (echinacea), Snapdragon, Statice, Strawflower, Sunflower

Can also plant

Artichoke, Arugula, Beet, Bok choy / pak choi, Broccoli, Broccoli raab (rapini), Carrot, Chinese broccoli (gai lan), Collard greens, Daikon radish, Garden cress, Green onion / scallion, Kale, Kohlrabi, Komatsuna (mustard spinach), Lettuce (leaf & mesclun), Lettuce (romaine & head), Parsnip, Pea (shelling / English), Pea (snap & snow), Radish, Spinach, Swiss chard, Turnip, Watercress, Catnip, Chamomile, Chervil, Cilantro, Dill, Fenugreek (methi), Sorrel (French / garden), Vietnamese coriander (rau ram), Blackberry, Raspberry, Annual salvia, Calendula, Larkspur, Marigold, Stock, Sweet alyssum, Sweet pea (flower)

Start seeds indoors

Broccoli, Lettuce (romaine & head), Pansy / viola, Stock

July59

Best time to plant

Vegetables: Arugula, Bean (bush snap), Bean (pole), Beet, Bok choy / pak choi, Broccoli, Broccoli raab (rapini), Brussels sprouts, Cabbage, Carrot, Cauliflower, Chinese broccoli (gai lan), Collard greens, Cucumber (pickling), Cucumber (slicing), Daikon radish, Kohlrabi, Komatsuna (mustard spinach), Lettuce (leaf & mesclun), Lettuce (romaine & head), Mustard greens, Napa / Chinese cabbage, New Zealand spinach, Pea (shelling / English), Pea (snap & snow), Rutabaga, Summer squash & zucchini, Swiss chard, Tomato (cherry & grape), Tomato (early / short-season), Turnip

Herbs: Anise hyssop, Bee balm (bergamot), Borage, Caraway, Chamomile, Chervil, Chives, Cilantro, Dill, Epazote, Fenugreek (methi), Garlic chives, Parsley, Tarragon (French), Vietnamese coriander (rau ram), Winter savory

Flowers: Annual salvia, Bachelor's button (cornflower), Calendula, California poppy, Marigold, Milkweed (native), Nasturtium, Purple coneflower (echinacea), Statice, Stock, Strawflower, Sweet alyssum

Can also plant

Garden cress, Kale, Mache (corn salad), Radish, Spinach, Larkspur, Pansy / viola, Sweet pea (flower)

August19

Best time to plant

Vegetables: Arugula, Broccoli raab (rapini), Garden cress, Kale, Kohlrabi, Komatsuna (mustard spinach), Lettuce (leaf & mesclun), Mache (corn salad), Mustard greens, Radish, Spinach, Swiss chard, Turnip

Herbs: Chervil, Fenugreek (methi)

Flowers: Calendula, Pansy / viola, Stock, Sweet alyssum

September2

Best time to plant

Vegetables: Elephant garlic, Garlic

October2

Best time to plant

Vegetables: Elephant garlic, Garlic

November0

Too cold to plant outdoors. A good month to plan beds and order seeds.

December0

Too cold to plant outdoors. A good month to plan beds and order seeds.

Every crop that grows in Cheyenne

121 of 174 crops in the app fit this climate. Dates are for planting outdoors; “Start indoors” is for seeds you grow into transplants.

Vegetables

Crop	Best time to plant	Also possible	Start indoors	How
Armenian cucumber	Jun 11–Jul 2	—	—	Sow seeds
Artichoke	Apr 30–May 14	May 15–Jun 11	Feb 26–Mar 12	Set out plants
Arugula	Apr 20–May 12, Jul 12–Aug 24	Apr 2–19, May 13–Jun 13, Jun 25–Jul 11	—	Sow seeds
Asparagus	May 24–Jun 11	Apr 16–May 23	—	Set out plants
Bean (bush snap)	Jun 11–Jul 17	—	—	Sow seeds
Bean (pole)	Jun 11–Jul 7	—	—	Sow seeds
Beet	Apr 16–May 7, Jul 12–Aug 2	May 8–Jul 11	—	Sow seeds
Bitter melon	Jun 11–Jul 5	—	—	Sow seeds
Bok choy / pak choi	Jul 3–26	Apr 30–May 11, Jun 15–Jul 2	—	Sow seeds
Broccoli	Apr 16–30, Jul 5–25	May 1–Jul 4	Mar 5–19, May 24–Jun 13	Set out plants
Broccoli raab (rapini)	Jul 10–Aug 12	Apr 16–May 21, Jun 16–Jul 9	—	Sow seeds
Brussels sprouts	Apr 16–30, Jun 16–Jul 7	May 1–Jun 15	Mar 5–19, May 5–26	Set out plants
Cabbage	Apr 9–23, Jun 22–Jul 13	Apr 24–Jun 21	Feb 26–Mar 12, May 11–Jun 1	Set out plants
Carrot	Apr 23–May 14, Jul 2–23	May 15–Jul 1	—	Sow seeds
Cauliflower	Apr 23–May 7, Jun 21–Jul 11	May 8–Jun 20	Mar 12–26, May 10–30	Set out plants
Celeriac (celery root)	May 8–Jun 8	—	Feb 20–Mar 23	Set out plants
Celery	May 24–Jun 4	—	Mar 8–19	Set out plants
Chickpea / garbanzo	May 8–22	May 23–Jun 1	—	Sow seeds
Chinese broccoli (gai lan)	Apr 23–May 14, Jul 10–30	May 15–Jul 9	—	Sow seeds
Collard greens	Apr 16–30, Jul 16–Aug 6	May 1–Jul 15	—	Sow seeds
Cucumber (pickling)	Jun 11–Jul 10	—	—	Sow seeds
Cucumber (slicing)	Jun 11–Jul 7	—	—	Sow seeds
Daikon radish	Apr 23–May 7, Jul 12–Aug 2	May 8–Jul 11	—	Sow seeds
Elephant garlic	Sep 10–Oct 15	—	—	Sow seeds
Endive & escarole	Apr 23–May 7, Jun 4–24	—	—	Sow seeds
Fava bean	Apr 5–14, Jun 14–Jul 3	—	—	Sow seeds
Fennel (bulb)	Apr 30–May 14, Jun 13–Jul 4	May 15–Jun 12	—	Sow seeds
Garden cress	May 4–27, Jul 31–Aug 28	Apr 30–May 3, May 28–Jun 24, Jul 11–30	—	Sow seeds
Garlic	Sep 10–Oct 15	—	—	Sow seeds
Green onion / scallion	Apr 16–30	May 1–Jun 11	—	Sow seeds
Kale	Apr 2–23, Jul 29–Aug 18	Apr 24–Jul 28	—	Sow seeds
Kohlrabi	Apr 16–30, Jul 20–Aug 9	May 1–Jul 19	—	Sow seeds
Komatsuna (mustard spinach)	Jul 1–Aug 17	May 14–Jun 30	—	Sow seeds
Leek	Apr 16–30, Jun 6–27	May 1–Jun 5	Feb 12–26, Apr 4–25	Set out plants
Lettuce (leaf & mesclun)	Apr 21–May 5, Jul 4–Aug 14	Apr 16–20, May 6–Jun 9, Jun 17–Jul 3	—	Sow seeds
Lettuce (romaine & head)	Jun 25–Jul 28	Apr 23–May 13, Jun 7–24	May 21–Jun 23	Set out plants
Mache (corn salad)	Jul 31–Aug 26	Apr 16–27, Jul 9–30	—	Sow seeds
Mustard greens	Apr 17–May 6, Jul 15–Aug 22	Apr 2–16, May 7–27, Jun 22–Jul 14	—	Sow seeds
Napa / Chinese cabbage	Jun 12–Jul 23	Apr 30–May 31, Jun 2–11	—	Sow seeds
New Zealand spinach	Jun 11–Jul 9	—	—	Sow seeds
Onion (bulbing)	May 13–Jun 18	Apr 2–May 12	Feb 25–Apr 2	Set out plants
Parsnip	Apr 23–May 14	May 15–Jun 22	—	Sow seeds
Pea (shelling / English)	Apr 5–19, Jul 10–30	Apr 20–Jul 9	—	Sow seeds
Pea (snap & snow)	Apr 5–19, Jul 10–30	Apr 20–Jul 9	—	Sow seeds
Pepper (sweet / bell)	Jun 11–25	—	Apr 9–23	Set out plants
Potato	May 19–Jun 14	Apr 22–May 18	—	Sow seeds
Radicchio	Apr 16–23	Apr 24–May 13	—	Sow seeds
Radish	Apr 23–May 22, Jul 31–Sep 5	Apr 9–22, May 23–Jun 21, Jul 9–30	—	Sow seeds
Rhubarb	May 24–Jun 11	Apr 16–May 23	—	Set out plants
Rutabaga	Apr 16–30, Jun 21–Jul 12	May 1–2, May 19–Jun 20	—	Sow seeds
Salsify	Apr 23–May 19	—	—	Sow seeds
Shallot	Apr 2–16, Jun 11–Jul 2	Apr 17–Jun 10	—	Sow seeds
Spinach	Apr 2–24, Jul 27–Aug 31	Apr 25–May 15, Jun 19–Jul 26	—	Sow seeds
Summer squash & zucchini	Jun 11–Jul 12	—	—	Sow seeds
Sunchoke (Jerusalem artichoke)	May 14–Jun 4	Apr 23–May 13	—	Sow seeds
Sweet corn	Jun 11–24	—	—	Sow seeds
Swiss chard	Apr 23–May 14, Jul 17–Aug 7	May 15–Jul 16	—	Sow seeds
Tomatillo	Jun 11–22	—	Apr 30–May 11	Set out plants
Tomato (cherry & grape)	Jun 11–Jul 9	—	Apr 23–May 21	Set out plants
Tomato (early / short-season)	May 24–31, Jun 24–Jul 14	Jun 1–23	Apr 5–12, May 6–26	Set out plants
Tomato (paste / determinate)	Jun 11–27	—	Apr 23–May 9	Set out plants
Tomato (slicing)	Jun 11–24	—	Apr 23–May 6	Set out plants
Turnip	Apr 16–30, Jul 22–Aug 12	May 1–Jul 21	—	Sow seeds
Watercress	Apr 23–May 7	May 8–Jun 18	—	Sow seeds

Herbs

Crop	Best time to plant	Also possible	Start indoors	How
Anise hyssop	Jun 11–Jul 9	May 14–Jun 10	Apr 27–May 25	Set out plants
Bee balm (bergamot)	Jun 11–Jul 9	May 14–Jun 10	Apr 23–May 21	Set out plants
Borage	Jun 17–Jul 24	May 7–Jun 16	—	Sow seeds
Caraway	Apr 23–May 7, Jun 22–Jul 13	May 8–Jun 21	—	Sow seeds
Catnip	Apr 30–May 14	May 15–Jun 11	Mar 12–26	Set out plants
Chamomile	Apr 16–30, Jul 7–28	May 1–Jul 6	—	Sow seeds
Chervil	Jul 9–Aug 12	Apr 23–May 11, Jun 14–Jul 8	—	Sow seeds
Chives	Jun 11–Jul 9	May 14–Jun 10	Apr 23–May 21	Set out plants
Cilantro	Jun 29–Aug 4	Apr 30–May 16, Jun 9–28	—	Sow seeds
Dill	Apr 30–May 7, Jul 8–29	May 8–Jul 7	—	Sow seeds
Epazote	Jun 11–25, Jul 1–22	—	—	Sow seeds
Fenugreek (methi)	Jul 1–Aug 10	May 14–Jun 30	—	Sow seeds
Feverfew	Jun 4–Jul 2	May 7–Jun 3	Apr 16–May 14	Set out plants
Garlic chives	Jun 11–Jul 9	May 14–Jun 10	Apr 23–May 21	Set out plants
Lavender	Jun 12–Jul 3	May 21–Jun 11	Mar 27–Apr 17	Set out plants
Lemon balm	May 23–Jun 11	Apr 30–May 22	Apr 18–May 7	Set out plants
Lemon verbena	Jun 10–27	May 24–Jun 9	—	Set out plants
Lovage	May 21–Jun 11	Apr 30–May 20	Apr 2–23	Set out plants
Marjoram	Jun 8–22	May 24–Jun 7	Apr 20–May 4	Set out plants
Mint	May 26–Jun 11	Apr 30–May 25	—	Set out plants
Oregano	Jun 8–Jul 5	May 14–Jun 7, Jul 6–8	Apr 20–May 17	Set out plants
Parsley	Apr 23–May 7, Jun 22–Jul 13	May 8–Jun 21	Feb 19–Mar 5, Apr 20–May 11	Set out plants
Rosemary	Jun 5–19	May 21–Jun 4	Mar 20–Apr 3	Set out plants
Sage	Jun 4–Jul 2	May 7–Jun 3	Apr 16–May 14	Set out plants
Shiso (perilla)	Jun 11–18	Jun 19–Jul 4	May 7–14	Set out plants
Sorrel (French / garden)	Apr 23–May 15	May 16–Jun 18	—	Sow seeds
Summer savory	May 24–Jun 7	Jun 8–Jul 7	—	Sow seeds
Tarragon (French)	Jun 11–Jul 9	May 14–Jun 10	—	Set out plants
Thyme	Jun 8–Jul 3	May 14–Jun 7	Apr 13–May 8	Set out plants
Vietnamese coriander (rau ram)	Jun 25–Jul 10	Jun 11–24, Jul 11–12	—	Set out plants
Winter savory	Jun 11–Jul 9	May 14–Jun 10	Apr 23–May 21	Set out plants

Fruit

Crop	Best time to plant	Also possible	Start indoors	How
Blackberry	Apr 12–30	May 1–Jun 14	—	Set out plants
Cucamelon / mouse melon	Jun 11–27	—	May 7–23	Set out plants
Grape (bunch)	Apr 16–May 14	May 15–28	—	Set out plants
Ground cherry	Jun 11–Jul 2	—	Apr 23–May 14	Set out plants
Raspberry	Apr 16–30	May 1–Jun 11	—	Set out plants
Strawberry	May 1–15, May 29–Jun 11	Apr 16–30, May 16–28	—	Set out plants

Flowers

Crop	Best time to plant	Also possible	Start indoors	How
Annual salvia	Jun 27–Jul 17	Jun 11–26, Jul 18–22	Apr 18–May 8	Set out plants
Bachelor's button (cornflower)	Apr 18–May 3, Jun 21–Jul 25	Apr 16–17, May 4–Jun 20	—	Sow seeds
Black-eyed Susan	Jun 4–24	May 14–Jun 3	—	Sow seeds
Calendula	Jul 3–Aug 9	Apr 30–Jul 2	—	Sow seeds
California poppy	Apr 18–May 3, Jun 21–Jul 25	Apr 16–17, May 4–Jun 20	—	Sow seeds
Cleome (spider flower)	Jun 11–22	—	—	Sow seeds
Coreopsis (tickseed)	May 25–Jul 3	Apr 16–May 24	—	Sow seeds
Larkspur	Apr 2–23	Apr 24–Jul 12	—	Sow seeds
Marigold	Jun 26–Jul 14	Jun 11–25, Jul 15–17	May 8–26	Set out plants
Milkweed (native)	Jun 11–Jul 9	May 14–Jun 10	May 7–Jun 4	Set out plants
Nasturtium	Jun 23–Jul 22	May 24–Jun 22	—	Sow seeds
Pansy / viola	Apr 2–23, Aug 4–24	Apr 24–Jun 2, Jul 4–Aug 3	Jan 15–Feb 5, May 19–Jun 8	Set out plants
Purple coneflower (echinacea)	Jun 11–Jul 9	May 14–Jun 10	Mar 26–Apr 23	Set out plants
Snapdragon	Apr 16–30, Jun 12–Jul 3	May 1–Jun 11	Feb 12–26, Apr 10–May 1	Set out plants
Statice	May 14–28, Jun 23–Jul 14	May 29–Jun 22	Mar 12–26, Apr 21–May 12	Set out plants
Stock	Apr 30–May 14, Jul 22–Aug 12	May 15–Jul 21	Feb 26–Mar 12, May 20–Jun 10	Set out plants
Strawflower	May 24–Jun 7, Jul 1–21	Jun 8–30	Apr 5–19, May 13–Jun 2	Set out plants
Sunflower	Jun 11–17	—	—	Sow seeds
Sweet alyssum	Apr 28–May 14, Jul 4–Aug 11	Apr 23–27, May 15–Jul 3	—	Sow seeds
Sweet pea (flower)	Apr 5–May 3	May 4–Jul 13	—	Sow seeds

Crops that struggle in Cheyenne

These need a climate Cheyenne doesn't have. Pots, shade cloth or a greenhouse can stretch the rules.

Amaranth greens / callaloo: The frost-free season (about 140 days) is shorter than the 38 days it needs.
Banana: Has to live outdoors through winter and needs nights no colder than about 45°F; the coldest month here averages 18°F.
Basil: The frost-free season (about 140 days) is shorter than the 58 days it needs.
Bay laurel: Has to live outdoors through winter and needs nights no colder than about 32°F; the coldest month here averages 18°F.
Bean (dry / shelling): The frost-free season (about 140 days) is shorter than the 90 days it needs.
Bean (lima): The frost-free season (about 140 days) is shorter than the 78 days it needs.
Blueberry: It needs acid soil, and dry-climate soil is usually alkaline. Grow it in a large pot of acid potting mix.
Bottle gourd / cucuzza: The frost-free season (about 140 days) is shorter than the 70 days it needs.
Cantaloupe & melons: The frost-free season (about 140 days) is shorter than the 82 days it needs.
Cardoon: The frost-free season (about 140 days) is shorter than the 135 days it needs.
Cassava (yuca): Has to live outdoors through winter and needs nights no colder than about 40°F; the coldest month here averages 18°F.
Celosia: The frost-free season (about 140 days) is shorter than the 80 days it needs.
Chaya (tree spinach): Has to live outdoors through winter and needs nights no colder than about 40°F; the coldest month here averages 18°F.
Cosmos: The frost-free season (about 140 days) is shorter than the 70 days it needs.
Cuban oregano: The frost-free season (about 140 days) is shorter than the 52 days it needs.
Culantro: The frost-free season (about 140 days) is shorter than the 70 days it needs.
Edamame: The frost-free season (about 140 days) is shorter than the 82 days it needs.
Eggplant: The frost-free season (about 140 days) is shorter than the 72 days it needs.
Fig: Has to live outdoors through winter and needs nights no colder than about 22°F; the coldest month here averages 18°F.
Ginger: The frost-free season (about 140 days) is shorter than the 270 days it needs.
Globe amaranth (gomphrena): The frost-free season (about 140 days) is shorter than the 70 days it needs.
Jicama: The frost-free season (about 140 days) is shorter than the 180 days it needs.
Lemongrass: The frost-free season (about 140 days) is shorter than the 88 days it needs.
Luffa gourd: The frost-free season (about 140 days) is shorter than the 105 days it needs.
Malabar spinach: The frost-free season (about 140 days) is shorter than the 65 days it needs.
Moringa: The frost-free season (about 140 days) is shorter than the 75 days it needs.
Muscadine grape: Has to live outdoors through winter and needs nights no colder than about 26°F; the coldest month here averages 18°F.
Okinawa spinach: The frost-free season (about 140 days) is shorter than the 52 days it needs.
Okra: The frost-free season (about 140 days) is shorter than the 58 days it needs.
Papalo: The frost-free season (about 140 days) is shorter than the 68 days it needs.
Papaya: Has to live outdoors through winter and needs nights no colder than about 48°F; the coldest month here averages 18°F.
Passion fruit: Has to live outdoors through winter and needs nights no colder than about 44°F; the coldest month here averages 18°F.
Peanut: The frost-free season (about 140 days) is shorter than the 130 days it needs.
Pentas (Egyptian star cluster): The frost-free season (about 140 days) is shorter than the 38 days it needs.
Pepper (hot / chili): The frost-free season (about 140 days) is shorter than the 80 days it needs.
Pigeon pea: The frost-free season (about 140 days) is shorter than the 150 days it needs.
Pineapple: Has to live outdoors through winter and needs nights no colder than about 45°F; the coldest month here averages 18°F.
Popcorn: The frost-free season (about 140 days) is shorter than the 102 days it needs.
Pumpkin: The frost-free season (about 140 days) is shorter than the 105 days it needs.
Purslane: The frost-free season (about 140 days) is shorter than the 49 days it needs.
Roselle: The frost-free season (about 140 days) is shorter than the 165 days it needs.
Seminole pumpkin / calabaza: The frost-free season (about 140 days) is shorter than the 108 days it needs.
Southern pea / cowpea: The frost-free season (about 140 days) is shorter than the 75 days it needs.
Stevia: The frost-free season (about 140 days) is shorter than the 100 days it needs.
Sweet potato: The frost-free season (about 140 days) is shorter than the 105 days it needs.
Taro (dasheen): The frost-free season (about 140 days) is shorter than the 225 days it needs.
Tomato (heat-set varieties): The frost-free season (about 140 days) is shorter than the 75 days it needs.
Watermelon: The frost-free season (about 140 days) is shorter than the 85 days it needs.
Winged bean: The frost-free season (about 140 days) is shorter than the 105 days it needs.
Winter melon / wax gourd: The frost-free season (about 140 days) is shorter than the 105 days it needs.
Winter squash: The frost-free season (about 140 days) is shorter than the 95 days it needs.
Yardlong bean: The frost-free season (about 140 days) is shorter than the 70 days it needs.
Zinnia: The frost-free season (about 140 days) is shorter than the 68 days it needs.

Nearby planting calendars

Denver, CO 97 mi · last frost around Apr 30
Salt Lake City, UT 370 mi · last frost around Mar 31
Billings, MT 370 mi · last frost around May 10
Albuquerque, NM 430 mi · last frost around Apr 6
Sioux Falls, SD 447 mi · last frost around May 1
All Wyoming cities

How these dates are worked out

Each crop has temperature limits and timing from university extension guides: how cold a night it can take, how much heat it can stand, how long it takes to mature, and how far before or after the last frost it goes in. Those are checked day by day against the Cheyenne WFO station's NOAA 1991–2020 climate normals (average highs, lows, rain and frost dates). Dates are estimates for a typical year; a sheltered yard, a slope or a cold pocket can shift them by a week or two.

Weather: NOAA National Centers for Environmental Information, 1991–2020 U.S. Climate Normals. Crop timing: university extension guides (sources listed for each crop in the app). City locations: GeoNames (CC BY 4.0).