Planting Calendar for ZIP 81236
Based on your local frost dates - last spring frost around May 27, first fall frost around Sep 23 - here is when to plant 79 common crops near ZIP 81236.
Last spring frost
May 27
First fall frost
Sep 23
Hardiness zone
5b
Vegetables
| Crop | Start seeds indoors | Plant outside | Fall planting by |
|---|---|---|---|
| Tomatoes | Apr 15 | Jun 3 (Transplant out) | - |
| Peppers | Apr 1 | Jun 10 (Transplant out) | - |
| Cucumbers | May 6 | Jun 3 (Transplant out) | Jul 16 |
| Zucchini | May 6 | Jun 3 (Transplant out) | Jul 21 |
| Summer Squash | May 6 | Jun 3 (Transplant out) | Jul 19 |
| Winter Squash | May 6 | Jun 3 (Transplant out) | - |
| Pumpkins | May 6 | Jun 3 (Transplant out) | - |
| Green Beans | - | May 27 (Direct sow) | Jul 16 |
| Sweet Corn | - | Jun 3 (Direct sow) | - |
| Melons | May 6 | Jun 10 (Transplant out) | - |
| Watermelon | May 6 | Jun 10 (Transplant out) | - |
| Okra | - | Jun 10 (Direct sow) | - |
| Eggplant | Apr 1 | Jun 10 (Transplant out) | - |
| Lettuce | Apr 29 | Apr 29 (Transplant out) | Jul 21 |
| Spinach | - | Apr 15 (Direct sow) | Jul 26 |
| Kale | Apr 15 | May 6 (Transplant out) | Jul 16 |
| Peas | - | Apr 15 (Direct sow) | Jul 11 |
| Carrots | - | May 6 (Direct sow) | Jul 1 |
| Beets | - | Apr 29 (Direct sow) | Jul 16 |
| Radishes | - | Apr 29 (Direct sow) | Aug 12 |
| Broccoli | Apr 15 | May 13 (Transplant out) | Jul 6 |
| Cauliflower | Apr 15 | May 13 (Transplant out) | Jul 1 |
| Cabbage | Apr 15 | May 6 (Transplant out) | Jul 1 |
| Onions | Mar 18 | Apr 29 (Transplant out) | - |
| Potatoes | - | May 13 (Direct sow) | - |
| Swiss Chard | Apr 29 | May 13 (Transplant out) | Jul 16 |
| Sweet Potatoes | - | Jun 17 (Direct sow) | - |
| Brussels Sprouts | Apr 15 | May 13 (Transplant out) | Jun 1 |
| Celery | Mar 18 | Jun 3 (Transplant out) | - |
| Leeks | Mar 18 | May 13 (Transplant out) | May 12 |
| Turnips | - | May 13 (Direct sow) | Jul 21 |
| Rutabaga | - | May 27 (Direct sow) | Jun 6 |
| Parsnips | - | May 13 (Direct sow) | May 12 |
| Kohlrabi | Apr 29 | May 13 (Transplant out) | Jul 16 |
| Collard Greens | Apr 15 | May 13 (Transplant out) | Jul 6 |
| Mustard Greens | - | May 13 (Direct sow) | Jul 26 |
| Arugula | - | May 13 (Direct sow) | Jul 31 |
| Bok Choy | Apr 29 | May 13 (Transplant out) | Jul 21 |
| Green Onions | - | May 13 (Direct sow) | Jul 11 |
| Tomatillos | Apr 15 | Jun 3 (Transplant out) | - |
| Fennel | Apr 29 | May 13 (Transplant out) | Jun 21 |
| Popcorn | May 27 | Jun 10 (Transplant out) | - |
| Black-Eyed Peas | May 27 | Jun 10 (Transplant out) | Jun 21 |
| Lima Beans | May 27 | Jun 10 (Transplant out) | - |
| Edamame | May 27 | Jun 10 (Transplant out) | - |
| Peanuts | May 27 | Jun 10 (Transplant out) | - |
| Globe Artichoke | Apr 1 | May 13 (Transplant out) | Jun 11 |
| Horseradish | May 27 | May 13 (Transplant out) | - |
| Ground Cherries | Apr 15 | Jun 10 (Transplant out) | - |
| Radicchio | Apr 22 | May 13 (Transplant out) | Jul 1 |
| Endive | Apr 22 | May 13 (Transplant out) | Jun 11 |
| Watercress | May 6 | May 13 (Transplant out) | Jul 11 |
| Sorrel | Apr 15 | May 6 (Transplant out) | Jul 11 |
| Sunchokes | May 27 | May 13 (Transplant out) | - |
| Malabar Spinach | Apr 15 | Jun 10 (Transplant out) | - |
| Amaranth Greens | May 6 | Jun 10 (Transplant out) | Jul 26 |
| Luffa Gourd | Apr 15 | Jun 10 (Transplant out) | - |
| New Zealand Spinach | Apr 29 | Jun 10 (Transplant out) | - |
| Fava Beans | May 27 | Apr 29 (Transplant out) | Jun 16 |
| Chayote | Apr 29 | Jun 10 (Transplant out) | - |
| Corn Salad | May 27 | Apr 29 (Transplant out) | Jul 11 |
| Bitter Melon | Apr 29 | Jun 10 (Transplant out) | - |
| Cardoon | Apr 15 | May 27 (Transplant out) | - |
Herbs
| Crop | Start seeds indoors | Plant outside | Fall planting by |
|---|---|---|---|
| Basil | Apr 15 | Jun 3 (Transplant out) | - |
| Cilantro | - | May 13 (Direct sow) | Jul 21 |
| Parsley | Apr 1 | Jun 10 (Transplant out) | Jun 26 |
| Dill | - | Jun 3 (Direct sow) | Jul 11 |
| Lemon Balm | Apr 15 | May 27 (Transplant out) | - |
| Borage | May 27 | May 27 (Transplant out) | Jul 16 |
| Chervil | May 27 | May 6 (Transplant out) | Jul 16 |
| Lemongrass | Apr 1 | Jun 10 (Transplant out) | - |
| Summer Savory | Apr 15 | May 27 (Transplant out) | - |
| Marjoram | Apr 15 | Jun 3 (Transplant out) | - |
| Lovage | Apr 15 | May 27 (Transplant out) | Jun 11 |
| Anise Hyssop | Apr 1 | May 27 (Transplant out) | - |
| Shiso | Apr 15 | Jun 3 (Transplant out) | - |
| Stevia | Apr 1 | Jun 10 (Transplant out) | - |
| Chamomile | Apr 15 | May 13 (Transplant out) | Jul 6 |
| Tarragon | May 27 | May 27 (Transplant out) | - |
How to read this calendar
Start seeds indoors is when to sow in trays inside so seedlings are ready to transplant. Plant outside is when to transplant seedlings or direct-sow seed, based on frost tolerance. Fall planting by is the latest date to start a fall crop and still harvest before the first fall frost. Tender crops wait until after the last spring frost; hardy crops can go out earlier.
Computed from NOAA 1991–2020 Climate Normals at Buena Vista 2S, Co, 12.6 miles away. Averages for planning, not a forecast. Page updated Aug 4, 2026.