DibbleColorado planting calendar
Colorado falls in USDA Zones 3 to 7. Here is a planting calendar for Zone 5, the most common zone across Colorado, with start, sow, transplant, and harvest dates for every crop. Set your garden's location in Dibble for dates tuned to your exact spot.
Right now in Colorado
What has a planting window open in Zone 5 this month and next, and what is coming in from the garden. Every crop links to its exact dates.
January in Zone 5
No planting windows open in January for Zone 5. It is the stretch for planning beds, ordering seed and getting tools ready.
February in Zone 5
March in Zone 5
April in Zone 5
- Start seeds indoors: Tomato, Pepper, Kale, Broccoli, Cabbage, Basil, Marigold, Parsley, Oregano, Sage, Chives, Eggplant, Leek, Celery, Hot Pepper, Tomatillo, Collard Greens
- Direct sow: Potato, Lettuce, Carrot, Pea, Spinach, Beet, Radish, Cilantro, Sunflower, Dill, Swiss Chard, Turnip, Parsnip, Arugula, Calendula, Borage, Green Onion, Bok Choy, Shallot, Kohlrabi, Chamomile
- Transplant: Onion, Kale, Broccoli, Cabbage, Strawberry, Blueberry, Raspberry, Asparagus, Rhubarb, Grape, Parsley, Chives, Leek, Celery, Collard Greens, Apple, Pear, Plum, Cherry, Apricot
May in Zone 5
- Start seeds indoors: Tomato, Pepper, Kale, Broccoli, Cabbage, Basil, Marigold, Parsley, Eggplant, Brussels Sprouts, Leek, Tomatillo, Collard Greens
- Direct sow: Potato, Lettuce, Carrot, Bean (bush), Pea, Cucumber, Zucchini, Winter Squash, Spinach, Beet, Radish, Sweet Corn, Cilantro, Zinnia, Sunflower, Cosmos, Dill, Swiss Chard, Turnip, Parsnip, Arugula, Cantaloupe, Watermelon, Nasturtium, Calendula, Borage, Pumpkin, Green Onion, Bok Choy, Fennel, Shallot, Kohlrabi, Chamomile
- Transplant: Tomato, Pepper, Onion, Kale, Broccoli, Sweet Potato, Cabbage, Basil, Marigold, Strawberry, Blueberry, Raspberry, Asparagus, Rhubarb, Grape, Mint, Parsley, Thyme, Oregano, Sage, Chives, Leek, Celery, Hot Pepper, Tomatillo, Collard Greens, Apple, Pear, Plum, Cherry, Apricot
- Plant tubers: Dahlia
Harvesting: Lettuce, Kale, Spinach, Radish, Cilantro, Tulip, Asparagus, Rhubarb, Swiss Chard, Turnip, Arugula, Calendula, Collard Greens, Bok Choy, Kohlrabi
June in Zone 5
- Start seeds indoors: Kale, Broccoli, Cabbage, Basil, Marigold, Parsley, Cauliflower, Brussels Sprouts, Tomatillo, Collard Greens
- Direct sow: Potato, Lettuce, Carrot, Bean (bush), Pea, Cucumber, Zucchini, Winter Squash, Beet, Radish, Sweet Corn, Cilantro, Zinnia, Sunflower, Cosmos, Dill, Swiss Chard, Parsnip, Okra, Cantaloupe, Watermelon, Nasturtium, Calendula, Borage, Pumpkin, Green Onion, Bok Choy, Fennel, Shallot, Kohlrabi, Chamomile
- Transplant: Tomato, Pepper, Kale, Broccoli, Sweet Potato, Cabbage, Basil, Marigold, Raspberry, Mint, Parsley, Thyme, Oregano, Sage, Eggplant, Leek, Celery, Hot Pepper, Tomatillo, Collard Greens
- Plant tubers: Dahlia
Harvesting: Lettuce, Carrot, Pea, Kale, Spinach, Broccoli, Beet, Cabbage, Basil, Cilantro, Rhubarb, Parsley, Dill, Swiss Chard, Turnip, Calendula, Borage, Green Onion, Collard Greens, Bok Choy, Kohlrabi, Chamomile
July in Zone 5
- Start seeds indoors: Kale, Broccoli, Cabbage, Basil, Cauliflower, Collard Greens
- Direct sow: Potato, Lettuce, Carrot, Bean (bush), Pea, Cucumber, Zucchini, Winter Squash, Beet, Radish, Sweet Corn, Cilantro, Zinnia, Sunflower, Cosmos, Dill, Swiss Chard, Parsnip, Okra, Nasturtium, Calendula, Borage, Pumpkin, Green Onion, Bok Choy, Fennel, Shallot, Kohlrabi, Chamomile
- Transplant: Tomato, Pepper, Kale, Broccoli, Cabbage, Basil, Marigold, Strawberry, Parsley, Eggplant, Cauliflower, Brussels Sprouts, Leek, Hot Pepper, Tomatillo, Collard Greens
- Plant tubers: Dahlia
Harvesting: Tomato, Pepper, Potato, Onion, Garlic, Carrot, Bean (bush), Cucumber, Zucchini, Winter Squash, Kale, Broccoli, Sweet Corn, Cabbage, Basil, Zinnia, Sunflower, Marigold, Cosmos, Strawberry, Mint, Parsley, Dill, Thyme, Oregano, Sage, Chives, Eggplant, Swiss Chard, Okra, Nasturtium, Calendula, Borage, Pumpkin, Hot Pepper, Green Onion, Collard Greens, Fennel, Shallot, Chamomile, Cherry
August in Zone 5
- Start seeds indoors: Kale, Collard Greens
- Direct sow: Lettuce, Carrot, Bean (bush), Pea, Cucumber, Zucchini, Spinach, Beet, Radish, Cilantro, Sunflower, Dill, Swiss Chard, Turnip, Arugula, Nasturtium, Calendula, Borage, Green Onion, Bok Choy, Fennel, Shallot, Kohlrabi, Chamomile
- Transplant: Kale, Broccoli, Cabbage, Basil, Marigold, Strawberry, Parsley, Cauliflower, Collard Greens
Harvesting: Tomato, Pepper, Potato, Onion, Cucumber, Zucchini, Winter Squash, Basil, Dahlia, Zinnia, Marigold, Cosmos, Strawberry, Blueberry, Raspberry, Mint, Parsley, Thyme, Oregano, Sage, Chives, Eggplant, Swiss Chard, Leek, Parsnip, Celery, Okra, Cantaloupe, Watermelon, Nasturtium, Calendula, Borage, Pumpkin, Hot Pepper, Tomatillo, Collard Greens, Fennel, Shallot, Chamomile, Plum, Apricot
September in Zone 5
- Direct sow: Lettuce, Spinach, Beet, Radish, Cilantro, Dill, Swiss Chard, Turnip, Arugula, Calendula, Borage, Green Onion, Bok Choy, Kohlrabi
- Transplant: Kale, Strawberry, Collard Greens
Harvesting: Tomato, Pepper, Lettuce, Pea, Kale, Broccoli, Radish, Sweet Potato, Basil, Dahlia, Zinnia, Marigold, Cosmos, Blueberry, Raspberry, Grape, Mint, Parsley, Dill, Thyme, Oregano, Sage, Chives, Eggplant, Swiss Chard, Cauliflower, Leek, Parsnip, Celery, Arugula, Okra, Watermelon, Nasturtium, Borage, Hot Pepper, Tomatillo, Kohlrabi, Apple, Pear, Plum
October in Zone 5
Harvesting: Lettuce, Pea, Kale, Spinach, Broccoli, Sweet Potato, Dahlia, Marigold, Cosmos, Strawberry, Raspberry, Grape, Mint, Dill, Thyme, Oregano, Sage, Chives, Cauliflower, Brussels Sprouts, Turnip, Arugula, Borage, Hot Pepper, Tomatillo, Apple, Pear
November in Zone 5
Harvesting: Kale, Strawberry, Mint, Thyme, Oregano, Sage, Chives, Brussels Sprouts, Turnip, Borage
December in Zone 5
No planting windows open in December for Zone 5. It is the stretch for planning beds, ordering seed and getting tools ready.
Harvesting: Strawberry, Thyme, Oregano, Sage, Borage
Any month: January · February · March · April · May · June · July · August · September · October · November · December
What to plant and when in Colorado
| Crop | Plant | Harvest |
|---|---|---|
| Tomato | May 23 | July 22 |
| Pepper | May 23 | July 21 |
| Potato | April 28 | July 26 |
| Onion | April 17 | July 25 |
| Garlic | October 3 | July 14 |
| Lettuce | April 6 | May 22 |
| Carrot | April 4 | June 10 |
| Bean (bush) | May 18 | July 4 |
| Pea | April 6 | June 1 |
| Cucumber | May 23 | July 6 |
| Zucchini | May 18 | July 2 |
| Winter Squash | May 18 | July 24 |
| Kale | April 4 | May 30 |
| Spinach | April 3 | May 17 |
| Broccoli | April 15 | June 13 |
| Beet | April 16 | June 8 |
| Radish | April 1 | April 26 |
| Sweet Corn | May 18 | July 13 |
| Sweet Potato | May 18 | September 17 |
| Cabbage | April 10 | June 14 |
| Basil | May 23 | June 24 |
| Cilantro | April 9 | May 25 |
| Dahlia | May 13 | August 10 |
| Zinnia | May 23 | July 17 |
| Sunflower | April 16 | July 3 |
| Marigold | May 23 | July 9 |
| Tulip | October 3 | April 25 |
| Cosmos | May 23 | July 27 |
| Strawberry | April 18 | July 13 |
| Blueberry | April 11 | August 5 |
| Raspberry | April 25 | August 19 |
| Blackberry | Not suited | |
| Asparagus | April 18 | April 14 |
| Rhubarb | April 11 | April 7 |
| Grape | April 18 | September 11 |
| Fig | Not suited | |
| Mint | May 2 | July 27 |
| Parsley | April 17 | June 28 |
| Dill | April 16 | June 8 |
| Thyme | May 2 | July 27 |
| Rosemary | Not suited | |
| Oregano | May 2 | July 27 |
| Sage | May 2 | July 27 |
| Chives | April 17 | July 3 |
| Eggplant | June 1 | July 27 |
| Swiss Chard | April 4 | May 26 |
| Cauliflower | July 7 | September 28 |
| Brussels Sprouts | July 3 | October 14 |
| Leek | April 10 | August 8 |
| Turnip | March 28 | May 12 |
| Parsnip | April 12 | August 6 |
| Celery | April 30 | August 26 |
| Arugula | March 26 | April 28 |
| Okra | June 2 | July 26 |
| Cantaloupe | May 23 | August 7 |
| Watermelon | May 30 | August 16 |
| Nasturtium | May 18 | July 1 |
| Calendula | April 8 | May 25 |
| Borage | April 16 | June 8 |
| Lavender | Not suited | |
| Pumpkin | May 18 | July 24 |
| Hot Pepper | May 23 | July 26 |
| Green Onion | April 3 | June 1 |
| Tomatillo | May 23 | August 3 |
| Collard Greens | April 6 | May 31 |
| Bok Choy | April 16 | May 29 |
| Fennel | May 3 | July 16 |
| Shallot | April 17 | July 26 |
| Kohlrabi | April 4 | May 26 |
| Chamomile | April 16 | June 18 |
| Apple | April 11 | September 4 |
| Pear | April 11 | September 4 |
| Peach | Not suited | |
| Plum | April 11 | August 25 |
| Cherry | April 11 | July 6 |
| Apricot | April 18 | August 2 |
| Lemon | Not suited | |
| Orange | Not suited | |
These dates use Zone 5 as a representative for Colorado. Your town may run a zone warmer or cooler, so Dibble pins the dates to your garden's own location.
Planting seasons in Colorado
Spring planting in Colorado
Zone 5's last spring frost lands around May 3. Spring in Colorado is the crowded season: the last of the indoor starts, the first direct sowings once the soil can be worked, and the transplants that go out after the frost date passes.
- Start seeds indoors: Pepper, Onion, Kale, Broccoli, Cabbage, Parsley, Oregano, Sage, Chives, Eggplant, Leek, Celery, Hot Pepper, Collard Greens, Tomato, Basil, Marigold, Tomatillo, Brussels Sprouts
- Direct sow: Turnip, Arugula, Potato, Lettuce, Carrot, Pea, Spinach, Beet, Radish, Cilantro, Sunflower, Dill, Swiss Chard, Parsnip, Calendula, Borage, Green Onion, Bok Choy, Shallot, Kohlrabi, Chamomile, Bean (bush), Cucumber, Zucchini, Winter Squash, Sweet Corn, Zinnia, Cosmos, Cantaloupe, Watermelon, Nasturtium, Pumpkin, Fennel
- Transplant: Onion, Kale, Broccoli, Cabbage, Strawberry, Blueberry, Raspberry, Asparagus, Rhubarb, Grape, Parsley, Chives, Leek, Celery, Collard Greens, Apple, Pear, Plum, Cherry, Apricot, Tomato, Pepper, Sweet Potato, Basil, Marigold, Mint, Thyme, Oregano, Sage, Hot Pepper, Tomatillo
- Plant tubers: Dahlia
Summer planting in Colorado
Summer in Colorado is succession sowing and the start of the fall garden. Quick crops go in every few weeks, and the cool-season crops for autumn are started while it is still hot.
- Start seeds indoors: Kale, Broccoli, Cabbage, Basil, Marigold, Parsley, Cauliflower, Brussels Sprouts, Tomatillo, Collard Greens
- Direct sow: Potato, Lettuce, Carrot, Bean (bush), Pea, Cucumber, Zucchini, Winter Squash, Beet, Radish, Sweet Corn, Cilantro, Zinnia, Sunflower, Cosmos, Dill, Swiss Chard, Parsnip, Okra, Cantaloupe, Watermelon, Nasturtium, Calendula, Borage, Pumpkin, Green Onion, Bok Choy, Fennel, Shallot, Kohlrabi, Chamomile, Spinach, Turnip, Arugula
- Transplant: Tomato, Pepper, Kale, Broccoli, Sweet Potato, Cabbage, Basil, Marigold, Raspberry, Mint, Parsley, Thyme, Oregano, Sage, Eggplant, Leek, Celery, Hot Pepper, Tomatillo, Collard Greens, Strawberry, Cauliflower, Brussels Sprouts
- Plant tubers: Dahlia
Fall planting in Colorado
Zone 5's first fall frost lands around October 12. Fall planting in Colorado means cool-season crops that finish before it, garlic and other bulbs that go in for next year, and anything hardy enough to overwinter.
- Direct sow: Lettuce, Spinach, Beet, Radish, Cilantro, Dill, Swiss Chard, Turnip, Arugula, Calendula, Borage, Green Onion, Bok Choy, Kohlrabi, Garlic
- Transplant: Kale, Strawberry, Collard Greens
- Plant bulbs: Tulip
Winter in Colorado
Winter in Colorado is when next year's garden gets planned and the seed order goes in. Toward the end of it the earliest indoor starts begin, counted back from the last spring frost.
These seasons are for Zone 5. For every zone, see what to plant in spring, summer, fall and winter, or what to plant now.
Colorado frost dates
The last spring frost and first fall frost anchor every planting date here. See Colorado frost dates by zone.
Find your exact zone in Colorado
Colorado spans Zones 3 to 7. Pick the zone that matches your area for a full planting calendar:
Zone 3
Planting calendarZone 4
Planting calendarZone 5
Planting calendarZone 6
Planting calendarZone 7
Planting calendarPlant at the right time this season
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