Planting windows for Denver-Stapleton
Computed from Denver-Stapleton's own frost dates. Click any crop for the full zone-6 growing guide — varieties, spacing, fall plantings, and more.
| Crop | Start seeds indoors | Transplant | Direct sow |
|---|---|---|---|
| 🍅 Tomatoes | Mar 9 – Mar 23 | May 11 – May 18 | — |
| 🫑 Peppers | Feb 23 – Mar 9 | May 18 – May 25 | — |
| 🥬 Lettuce | Mar 23 – Apr 6 | Apr 6 – Apr 20 | Apr 6 – May 4 |
| 🫛 Peas | — | — | Mar 23 – Apr 6 |
| 🥕 Carrots | — | — | Apr 13 – May 4 |
| 🥦 Broccoli | Mar 16 – Mar 30 | Apr 13 – Apr 27 | — |
| 🥬 Kale | Mar 23 – Apr 6 | Apr 6 – Apr 20 | Apr 6 – Apr 20 |
| 🥒 Cucumbers | Apr 6 – Apr 13 | May 11 – May 18 | May 11 – May 18 |
| 🥒 Zucchini | Apr 6 – Apr 13 | May 11 – May 18 | May 11 – May 18 |
| 🫘 Green Beans (Bush) | — | — | May 11 – May 18 |
| 🌽 Sweet Corn | — | — | May 11 – May 18 |
| 🌿 Basil | Mar 23 – Apr 6 | May 11 – May 18 | May 18 – May 25 |
| 🧄 Garlic | — | — | Fall: Aug 27 – Sep 24 |
Want this for all 50 crops, or as a printable seed-shelf schedule? Use the planting calendar and the seed starting scheduler — both can use Denver-Stapleton's dates automatically after a lookup.
Reading the season in Denver-Stapleton
Roughly 157 frost-free days gives Denver-Stapleton gardeners room for nearly every common vegetable. Warm-season crops go out after May 4; a fall garden sown in late summer matures comfortably before the Oct 8 frost.