Year Round GardenPlanting calendar for Flagstaff, Arizona
Dates from 30 years of records at the Flagstaff Pulliam Airport weather station, 3.8 miles from Flagstaff, worked out crop by crop with the same method as the Year Round Garden app.
The most popular crops for Flagstaff this month. Every crop and month is below.
Flagstaff at a glance
- Weather station
- Flagstaff Pulliam Airport · 3.8 mi
- USDA zone
- 6a
- Last spring frost
- typically Jun 4; 1 year in 10 after Jun 19
- First fall frost
- typically Sep 28; 1 year in 10 before Sep 16
- Frost-free season
- about 116 days
- Hottest month
- July: highs 82°F, nights 51°F
- Coldest month
- December: highs 43°F, nights 17°F
- Rain
- 21 in. a year, most in February, July and August
What shapes the seasons here
The last spring frost in Flagstaff typically comes around Jun 4, but 1 year in 10 it comes after Jun 19. The first fall frost typically arrives around Sep 28. That leaves about 116 frost-free days for tender crops like tomatoes, peppers and squash.
Summers are mild, with highs around 82°F in July, so cool-season crops last longer here than in hotter places: leaf lettuce is best planted Jul 4–Aug 11.
Flagstaff gets about 21 inches of rain a year, most of it in February, July and August.
100 of the 174 crops in the app grow here; 74 need a different climate (listed near the bottom).
When to plant the most popular crops
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.
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What to plant in Flagstaff, month by month
January0
Too cold to plant outdoors. A good month to plan beds and order seeds.
See all 0 crops in their best window in January
Too cold to plant outdoors. A good month to plan beds and order seeds.
February0
Too cold to plant outdoors. Plan beds, order seeds and start the ones listed indoors.
See all 0 crops in their best window in February
Too cold to plant outdoors. Plan beds, order seeds and start the ones listed indoors.
Start seeds indoors
Pansy / viola
March0
Start seeds indoors
Cabbage, Onion (bulbing)
See all 0 crops in their best window in March
Too cold to plant outdoors. Plan beds, order seeds and start the ones listed indoors.
Start seeds indoors
Artichoke, Cabbage, Celeriac (celery root), Leek, Onion (bulbing), Parsley, Snapdragon, Stock
April9
Best time to plant
Pea (snap & snow), Spinach, Kale
Start seeds indoors
Broccoli
See all 9 crops in their best window in April
Best time to plant
Vegetables: Kale, Pea (shelling / English), Pea (snap & snow), Shallot, Spinach
Fruit: Blueberry
Flowers: Larkspur, Pansy / viola, Sweet pea (flower)
Start seeds indoors
Broccoli, Brussels sprouts, Cauliflower, Leek, Catnip, Lavender, Lovage, Parsley, Thyme, Annual salvia, Purple coneflower (echinacea), Snapdragon, Statice
May44
Best time to plant
Potato, Pea (snap & snow), Spinach, Kale, Collard greens, Broccoli, Cabbage, Carrot, Radish, Onion (bulbing)
Start seeds indoors
Broccoli, Cabbage
See all 44 crops in their best window in May
Best time to plant
Vegetables: Artichoke, Arugula, Beet, Broccoli, Brussels sprouts, Cabbage, Carrot, Cauliflower, Chinese broccoli (gai lan), Collard greens, Daikon radish, Endive & escarole, Fennel (bulb), Green onion / scallion, Kale, Kohlrabi, Leek, Mustard greens, Onion (bulbing), Parsnip, Pea (shelling / English), Pea (snap & snow), Potato, Radicchio, Radish, Rutabaga, Shallot, Spinach, Swiss chard, Turnip, Watercress
Herbs: Caraway, Chamomile, Dill, Parsley
Fruit: Blackberry, Blueberry, Grape (bunch), Raspberry
Flowers: Larkspur, Pansy / viola, Snapdragon, Stock, Sweet pea (flower)
Can also plant
Asparagus, Bok choy / pak choi, Broccoli raab (rapini), Garden cress, Lettuce (leaf & mesclun), Lettuce (romaine & head), Mache (corn salad), Napa / Chinese cabbage, Rhubarb, Sunchoke (Jerusalem artichoke), Catnip, Chervil, Cilantro, Lemon balm, Lovage, Mint, Sorrel (French / garden), Strawberry, Bachelor's button (cornflower), Calendula, California poppy, Coreopsis (tickseed), Sweet alyssum
Start seeds indoors
Broccoli, Brussels sprouts, Cabbage, Cauliflower, Lettuce (romaine & head), Tomato (early / short-season), Anise hyssop, Bee balm (bergamot), Catnip, Chives, Feverfew, Garlic chives, Lemon balm, Lovage, Oregano, Parsley, Sage, Winter savory, Annual salvia, Marigold, Milkweed (native), Pansy / viola, Statice, Stock, Strawflower
June46
Best time to plant
Potato, Cabbage, Onion (bulbing), Strawberry
Start seeds indoors
Broccoli
See all 46 crops in their best window in June
Best time to plant
Vegetables: Asparagus, Brussels sprouts, Cabbage, Cauliflower, Endive & escarole, Fava bean, Fennel (bulb), Leek, Lettuce (romaine & head), Napa / Chinese cabbage, Onion (bulbing), Potato, Rhubarb, Rutabaga, Shallot, Sunchoke (Jerusalem artichoke), Tomato (early / short-season)
Herbs: Anise hyssop, Bee balm (bergamot), Borage, Caraway, Catnip, Chives, Feverfew, Garlic chives, Lavender, Lemon balm, Lemon verbena, Lovage, Mint, Oregano, Parsley, Sage, Sorrel (French / garden), Thyme, Winter savory
Fruit: Strawberry
Flowers: Bachelor's button (cornflower), Black-eyed Susan, California poppy, Coreopsis (tickseed), Milkweed (native), Purple coneflower (echinacea), Snapdragon, Statice, Strawflower
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), Mustard greens, Parsnip, Pea (shelling / English), Pea (snap & snow), Radicchio, Radish, Spinach, Swiss chard, Turnip, Watercress, Chamomile, Chervil, Cilantro, Dill, Fenugreek (methi), Summer savory, Tarragon (French), Blackberry, Blueberry, Grape (bunch), Raspberry, Calendula, Larkspur, Nasturtium, Pansy / viola, Stock, Sweet alyssum, Sweet pea (flower)
Start seeds indoors
Broccoli, Lettuce (romaine & head), Milkweed (native), Stock
July60
Best time to plant
Summer squash & zucchini, Bean (bush snap), Pea (snap & snow), Lettuce (leaf & mesclun), Spinach, Collard greens, Broccoli, Cabbage, Carrot, Radish, Cilantro
See all 60 crops in their best window in July
Best time to plant
Vegetables: Arugula, Bean (bush snap), Beet, Bok choy / pak choi, Broccoli, Broccoli raab (rapini), Cabbage, Carrot, Cauliflower, Chinese broccoli (gai lan), Collard greens, Daikon radish, Garden cress, Kohlrabi, Komatsuna (mustard spinach), Lettuce (leaf & mesclun), Lettuce (romaine & head), Mache (corn salad), Mustard greens, Napa / Chinese cabbage, Pea (shelling / English), Pea (snap & snow), Radish, Rutabaga, Spinach, Summer squash & zucchini, Swiss chard, Tomato (early / short-season), Turnip
Herbs: Anise hyssop, Bee balm (bergamot), Borage, Caraway, Chamomile, Chervil, Chives, Cilantro, Dill, Epazote, Fenugreek (methi), Feverfew, Garlic chives, Parsley, Sage, Sorrel (French / garden), 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
Kale, Pansy / viola, Sweet pea (flower)
August16
Best time to plant
Lettuce (leaf & mesclun), Spinach, Kale, Radish
See all 16 crops in their best window in August
Best time to plant
Vegetables: Arugula, Broccoli raab (rapini), Garden cress, Kale, Komatsuna (mustard spinach), Lettuce (leaf & mesclun), Mache (corn salad), Mustard greens, Radish, Spinach, Turnip
Herbs: Chervil, Fenugreek (methi)
Flowers: Pansy / viola, Stock, Sweet alyssum
September2
Best time to plant
Garlic
See all 2 crops in their best window in September
Best time to plant
Vegetables: Elephant garlic, Garlic
October2
Best time to plant
Garlic
See all 2 crops in their best window in October
Best time to plant
Vegetables: Elephant garlic, Garlic
November0
Too cold to plant outdoors. A good month to plan beds and order seeds.
See all 0 crops in their best window in November
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.
See all 0 crops in their best window in December
Too cold to plant outdoors. A good month to plan beds and order seeds.
Every crop that grows in Flagstaff
100 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 |
|---|---|---|---|---|
| Artichoke | May 21–Jun 4 | Jun 5–16 | Mar 19–Apr 2 | Set out plants |
| Arugula | May 13–31, Jul 11–Aug 21 | Apr 23–May 12, Jun 1–Jul 10 | — | Sow seeds |
| Asparagus | Jun 4–Jul 2 | May 7–Jun 3 | — | Set out plants |
| Bean (bush snap) | Jul 3–14 | — | — | Sow seeds |
| Beet | May 7–28, Jul 9–30 | May 29–Jul 8 | — | Sow seeds |
| Bok choy / pak choi | Jun 27–Jul 23 | May 21–Jun 26 | — | Sow seeds |
| Broccoli | May 7–21, Jul 2–22 | May 22–Jul 1 | Mar 26–Apr 9, May 21–Jun 10 | Set out plants |
| Broccoli raab (rapini) | Jul 6–Aug 9 | May 7–Jul 5 | — | Sow seeds |
| Brussels sprouts | May 7–21, Jun 13–Jul 4 | May 22–Jun 12 | Mar 26–Apr 9, May 2–23 | Set out plants |
| Cabbage | Apr 30–May 14, Jun 19–Jul 10 | May 15–Jun 18 | Mar 19–Apr 2, May 8–29 | Set out plants |
| Carrot | May 14–Jun 4, Jun 29–Jul 20 | Jun 5–28 | — | Sow seeds |
| Cauliflower | May 14–28, Jun 18–Jul 8 | May 29–Jun 17 | Apr 2–16, May 7–27 | Set out plants |
| Celeriac (celery root) | May 28–Jun 5 | — | Mar 12–20 | Set out plants |
| Chinese broccoli (gai lan) | May 14–Jun 4, Jul 7–27 | Jun 5–Jul 6 | — | Sow seeds |
| Collard greens | May 7–21, Jul 13–Aug 3 | May 22–Jul 12 | — | Sow seeds |
| Daikon radish | May 14–28, Jul 9–30 | May 29–Jul 8 | — | Sow seeds |
| Elephant garlic | Sep 7–Oct 12 | — | — | Sow seeds |
| Endive & escarole | May 14–28, May 31–Jun 21 | — | — | Sow seeds |
| Fava bean | Jun 4–30 | — | — | Sow seeds |
| Fennel (bulb) | May 21–Jun 4, Jun 10–Jul 1 | — | — | Sow seeds |
| Garden cress | Jul 21–Aug 25 | May 21–Jul 20 | — | Sow seeds |
| Garlic | Sep 7–Oct 12 | — | — | Sow seeds |
| Green onion / scallion | May 7–21 | May 22–Jul 2 | — | Sow seeds |
| Kale | Apr 23–May 14, Jul 26–Aug 15 | May 15–Jul 25 | — | Sow seeds |
| Kohlrabi | May 7–21, Jul 17–Aug 6 | May 22–Jul 16 | — | Sow seeds |
| Komatsuna (mustard spinach) | Jul 10–Aug 14 | Jun 4–Jul 9 | — | Sow seeds |
| Leek | May 7–21, Jun 3–24 | May 22–Jun 2 | Mar 5–19, Apr 1–22 | Set out plants |
| Lettuce (leaf & mesclun) | Jul 4–Aug 11 | May 7–Jul 3 | — | Sow seeds |
| Lettuce (romaine & head) | Jun 22–Jul 25 | May 14–Jun 21 | May 18–Jun 20 | Set out plants |
| Mache (corn salad) | Jul 17–Aug 23 | May 7–25, Jun 26–Jul 16 | — | Sow seeds |
| Mustard greens | May 7–26, Jul 11–Aug 19 | Apr 23–May 6, May 27–Jul 10 | — | Sow seeds |
| Napa / Chinese cabbage | Jun 20–Jul 20 | May 21–Jun 19 | — | Sow seeds |
| Onion (bulbing) | May 20–Jun 15 | Apr 23–May 19 | Mar 4–30 | Set out plants |
| Parsnip | May 14–Jun 4 | Jun 5–19 | — | Sow seeds |
| Pea (shelling / English) | Apr 23–May 7, Jul 7–27 | May 8–Jul 6 | — | Sow seeds |
| Pea (snap & snow) | Apr 23–May 7, Jul 7–27 | May 8–Jul 6 | — | Sow seeds |
| Potato | May 25–Jun 11 | May 8–24 | — | Sow seeds |
| Radicchio | May 7–14, Jun 24–25 | May 15–Jun 23 | — | Sow seeds |
| Radish | May 12–25, Jul 23–Sep 2 | Apr 30–May 11, May 26–Jul 22 | — | Sow seeds |
| Rhubarb | Jun 4–Jul 2 | May 7–Jun 3 | — | Set out plants |
| Rutabaga | May 7–21, Jun 18–Jul 9 | May 22–Jun 17 | — | Sow seeds |
| Shallot | Apr 23–May 7, Jun 8–29 | May 8–Jun 7 | — | Sow seeds |
| Spinach | Apr 23–May 14, Jul 18–Aug 28 | May 15–Jul 17 | — | Sow seeds |
| Summer squash & zucchini | Jul 3–9 | — | — | Sow seeds |
| Sunchoke (Jerusalem artichoke) | Jun 4–25 | May 14–Jun 3 | — | Sow seeds |
| Swiss chard | May 14–Jun 4, Jul 14–Aug 4 | Jun 5–Jul 13 | — | Sow seeds |
| Tomato (early / short-season) | Jun 15–Jul 11 | — | Apr 27–May 23 | Set out plants |
| Turnip | May 7–21, Jul 19–Aug 9 | May 22–Jul 18 | — | Sow seeds |
| Watercress | May 14–28 | May 29–Jul 9 | — | Sow seeds |
Herbs
| Crop | Best time to plant | Also possible | Start indoors | How |
|---|---|---|---|---|
| Anise hyssop | Jun 16–Jul 11 | Jun 4–15, Jul 12–24 | May 2–27 | Set out plants |
| Bee balm (bergamot) | Jun 16–Jul 11 | Jun 4–15, Jul 12–24 | Apr 28–May 23 | Set out plants |
| Borage | Jun 24–Jul 21 | May 28–Jun 23 | — | Sow seeds |
| Caraway | May 14–28, Jun 19–Jul 10 | May 29–Jun 18 | — | Sow seeds |
| Catnip | Jun 11–Jul 2 | May 21–Jun 10 | Apr 23–May 14 | Set out plants |
| Chamomile | May 7–21, Jul 4–25 | May 22–Jul 3 | — | Sow seeds |
| Chervil | Jul 3–Aug 9 | May 14–Jul 2 | — | Sow seeds |
| Chives | Jun 21–Jul 7 | Jun 4–20, Jul 8–21 | May 3–19 | Set out plants |
| Cilantro | Jun 26–Aug 1 | May 21–Jun 25 | — | Sow seeds |
| Dill | May 21–28, Jul 5–26 | May 29–Jul 4 | — | Sow seeds |
| Epazote | Jul 3–19 | — | — | Sow seeds |
| Fenugreek (methi) | Jul 7–Aug 7 | Jun 4–Jul 6 | — | Sow seeds |
| Feverfew | Jun 19–Jul 10 | May 28–Jun 18 | May 1–22 | Set out plants |
| Garlic chives | Jun 17–Jul 10 | Jun 4–16, Jul 11–21 | Apr 29–May 22 | Set out plants |
| Lavender | Jun 11–30 | — | Mar 26–Apr 14 | Set out plants |
| Lemon balm | Jun 11–Jul 2 | May 21–Jun 10 | May 7–28 | Set out plants |
| Lemon verbena | Jun 15–24 | — | — | Set out plants |
| Lovage | Jun 11–Jul 2 | May 21–Jun 10 | Apr 23–May 14 | Set out plants |
| Mint | Jun 11–Jul 2 | May 21–Jun 10 | — | Set out plants |
| Oregano | Jun 20–Jul 5 | Jun 4–19 | May 2–17 | Set out plants |
| Parsley | May 14–28, Jun 19–Jul 10 | May 29–Jun 18 | Mar 12–26, Apr 17–May 8 | Set out plants |
| Sage | Jun 17–Jul 7 | May 28–Jun 16 | Apr 29–May 19 | Set out plants |
| Sorrel (French / garden) | Jun 11–Jul 9 | May 14–Jun 10 | — | Sow seeds |
| Summer savory | Jun 15–18 | Jun 19–Jul 4 | — | Sow seeds |
| Tarragon (French) | Jul 14–29 | Jun 4–Jul 13 | — | Set out plants |
| Thyme | Jun 17–30 | Jun 4–16 | Apr 22–May 5 | Set out plants |
| Vietnamese coriander (rau ram) | Jul 3–9 | — | — | Set out plants |
| Winter savory | Jun 21–Jul 11 | Jun 4–20, Jul 12–15 | May 3–23 | Set out plants |
Fruit
| Crop | Best time to plant | Also possible | Start indoors | How |
|---|---|---|---|---|
| Blackberry | Apr 30–May 21 | May 22–Jun 30 | — | Set out plants |
| Blueberry | Apr 24–May 14 | May 15–Jun 30 | — | Set out plants |
| Grape (bunch) | May 7–Jun 4 | Jun 5–18 | — | Set out plants |
| Raspberry | May 7–21 | May 22–Jul 2 | — | Set out plants |
| Strawberry | Jun 4–Jul 2 | May 7–Jun 3 | — | Set out plants |
Flowers
| Crop | Best time to plant | Also possible | Start indoors | How |
|---|---|---|---|---|
| Annual salvia | Jul 3–19 | — | Apr 24–May 10 | Set out plants |
| Bachelor's button (cornflower) | Jun 15–Jul 22 | May 7–Jun 14 | — | Sow seeds |
| Black-eyed Susan | Jun 4–21 | — | — | Sow seeds |
| Calendula | Jun 29–Aug 6 | May 21–Jun 28 | — | Sow seeds |
| California poppy | Jun 15–Jul 22 | May 7–Jun 14 | — | Sow seeds |
| Coreopsis (tickseed) | Jun 3–30 | May 7–Jun 2 | — | Sow seeds |
| Larkspur | Apr 23–May 14 | May 15–Jul 9 | — | Sow seeds |
| Marigold | Jul 3–14 | — | May 15–26 | Set out plants |
| Milkweed (native) | Jun 18–Jul 15 | Jun 4–17, Jul 16–29 | May 14–Jun 10 | Set out plants |
| Nasturtium | Jul 2–19 | Jun 15–Jul 1 | — | Sow seeds |
| Pansy / viola | Apr 23–May 14, Aug 1–21 | May 15–Jul 31 | Feb 5–26, May 16–Jun 5 | Set out plants |
| Purple coneflower (echinacea) | Jun 18–Jul 15 | Jun 4–17, Jul 16–29 | Apr 2–29 | Set out plants |
| Snapdragon | May 7–21, Jun 9–30 | May 22–Jun 8 | Mar 5–19, Apr 7–28 | Set out plants |
| Statice | Jun 4–18, Jun 20–Jul 11 | — | Apr 2–16, Apr 18–May 9 | Set out plants |
| Stock | May 21–Jun 4, Jul 19–Aug 9 | Jun 5–Jul 18 | Mar 19–Apr 2, May 17–Jun 7 | Set out plants |
| Strawflower | Jun 15–Jul 18 | — | Apr 27–May 30 | Set out plants |
| Sweet alyssum | Jun 27–Aug 8 | May 14–Jun 26 | — | Sow seeds |
| Sweet pea (flower) | Apr 23–May 21 | May 22–Jul 10 | — | Sow seeds |
Crops that struggle in Flagstaff
These need a climate Flagstaff doesn't have. Pots, shade cloth or a greenhouse can stretch the rules.
- Amaranth greens / callaloo: The frost-free season (about 116 days) is shorter than the 38 days it needs.
- Armenian cucumber: The frost-free season (about 116 days) is shorter than the 62 days it needs.
- Banana: Has to live outdoors through winter and needs nights no colder than about 45°F; the coldest month here averages 17°F.
- Basil: The frost-free season (about 116 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 17°F.
- Bean (dry / shelling): The frost-free season (about 116 days) is shorter than the 90 days it needs.
- Bean (lima): The frost-free season (about 116 days) is shorter than the 78 days it needs.
- Bean (pole): The frost-free season (about 116 days) is shorter than the 65 days it needs.
- Bitter melon: The frost-free season (about 116 days) is shorter than the 60 days it needs.
- Bottle gourd / cucuzza: The frost-free season (about 116 days) is shorter than the 70 days it needs.
- Cantaloupe & melons: The frost-free season (about 116 days) is shorter than the 82 days it needs.
- Cardoon: The frost-free season (about 116 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 17°F.
- Celery: The frost-free season (about 116 days) is shorter than the 105 days it needs.
- Celosia: The frost-free season (about 116 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 17°F.
- Chickpea / garbanzo: The frost-free season (about 116 days) is shorter than the 108 days it needs.
- Cleome (spider flower): The frost-free season (about 116 days) is shorter than the 80 days it needs.
- Cosmos: The frost-free season (about 116 days) is shorter than the 70 days it needs.
- Cuban oregano: The frost-free season (about 116 days) is shorter than the 52 days it needs.
- Cucamelon / mouse melon: The frost-free season (about 116 days) is shorter than the 68 days it needs.
- Cucumber (pickling): The frost-free season (about 116 days) is shorter than the 55 days it needs.
- Cucumber (slicing): The frost-free season (about 116 days) is shorter than the 58 days it needs.
- Culantro: The frost-free season (about 116 days) is shorter than the 70 days it needs.
- Edamame: The frost-free season (about 116 days) is shorter than the 82 days it needs.
- Eggplant: The frost-free season (about 116 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 17°F.
- Ginger: The frost-free season (about 116 days) is shorter than the 270 days it needs.
- Globe amaranth (gomphrena): The frost-free season (about 116 days) is shorter than the 70 days it needs.
- Ground cherry: The frost-free season (about 116 days) is shorter than the 70 days it needs.
- Jicama: The frost-free season (about 116 days) is shorter than the 180 days it needs.
- Lemongrass: The frost-free season (about 116 days) is shorter than the 88 days it needs.
- Luffa gourd: The frost-free season (about 116 days) is shorter than the 105 days it needs.
- Malabar spinach: The frost-free season (about 116 days) is shorter than the 65 days it needs.
- Marjoram: The frost-free season (about 116 days) is shorter than the 80 days it needs.
- Moringa: The frost-free season (about 116 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 17°F.
- New Zealand spinach: The frost-free season (about 116 days) is shorter than the 62 days it needs.
- Okinawa spinach: The frost-free season (about 116 days) is shorter than the 52 days it needs.
- Okra: The frost-free season (about 116 days) is shorter than the 58 days it needs.
- Papalo: The frost-free season (about 116 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 17°F.
- Passion fruit: Has to live outdoors through winter and needs nights no colder than about 44°F; the coldest month here averages 17°F.
- Peanut: The frost-free season (about 116 days) is shorter than the 130 days it needs.
- Pentas (Egyptian star cluster): The frost-free season (about 116 days) is shorter than the 38 days it needs.
- Pepper (hot / chili): The frost-free season (about 116 days) is shorter than the 80 days it needs.
- Pepper (sweet / bell): The frost-free season (about 116 days) is shorter than the 70 days it needs.
- Pigeon pea: The frost-free season (about 116 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 17°F.
- Popcorn: The frost-free season (about 116 days) is shorter than the 102 days it needs.
- Pumpkin: The frost-free season (about 116 days) is shorter than the 105 days it needs.
- Purslane: The frost-free season (about 116 days) is shorter than the 49 days it needs.
- Roselle: The frost-free season (about 116 days) is shorter than the 165 days it needs.
- Rosemary: The frost-free season (about 116 days) is shorter than the 105 days it needs.
- Salsify: The frost-free season (about 116 days) is shorter than the 135 days it needs.
- Seminole pumpkin / calabaza: The frost-free season (about 116 days) is shorter than the 108 days it needs.
- Shiso (perilla): The frost-free season (about 116 days) is shorter than the 68 days it needs.
- Southern pea / cowpea: The frost-free season (about 116 days) is shorter than the 75 days it needs.
- Stevia: The frost-free season (about 116 days) is shorter than the 100 days it needs.
- Sunflower: The frost-free season (about 116 days) is shorter than the 85 days it needs.
- Sweet corn: The frost-free season (about 116 days) is shorter than the 78 days it needs.
- Sweet potato: The frost-free season (about 116 days) is shorter than the 105 days it needs.
- Taro (dasheen): The frost-free season (about 116 days) is shorter than the 225 days it needs.
- Tomatillo: The frost-free season (about 116 days) is shorter than the 80 days it needs.
- Tomato (cherry & grape): The frost-free season (about 116 days) is shorter than the 62 days it needs.
- Tomato (heat-set varieties): The frost-free season (about 116 days) is shorter than the 75 days it needs.
- Tomato (paste / determinate): The frost-free season (about 116 days) is shorter than the 75 days it needs.
- Tomato (slicing): The frost-free season (about 116 days) is shorter than the 78 days it needs.
- Watermelon: The frost-free season (about 116 days) is shorter than the 85 days it needs.
- Winged bean: The frost-free season (about 116 days) is shorter than the 105 days it needs.
- Winter melon / wax gourd: The frost-free season (about 116 days) is shorter than the 105 days it needs.
- Winter squash: The frost-free season (about 116 days) is shorter than the 95 days it needs.
- Yardlong bean: The frost-free season (about 116 days) is shorter than the 70 days it needs.
- Zinnia: The frost-free season (about 116 days) is shorter than the 68 days it needs.
Nearby planting calendars
- Mesa, AZ 123 mi · last frost around Feb 13
- Phoenix, AZ 123 mi · frost only briefly in winter
- Las Vegas, NV 207 mi · frost only briefly in winter
- Tucson, AZ 210 mi · frost only briefly in winter
- Yuma, AZ 241 mi · frost only briefly in winter
- All Arizona 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 Flagstaff Pulliam Airport 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).