Planting windows for Ontario International Airport
Computed from Ontario International Airport's own frost dates. Click any crop for the full zone-10 growing guide — varieties, spacing, fall plantings, and more.
| Crop | Start seeds indoors | Transplant | Direct sow |
|---|---|---|---|
| 🍅 Tomatoes | Nov 9 – Nov 23 | Jan 11 – Jan 18 | — |
| 🫑 Peppers | Oct 26 – Nov 9 | Jan 18 – Jan 25 | — |
| 🥬 Lettuce | Nov 23 – Dec 7 | Dec 7 – Dec 21 | Dec 7 – Jan 4 |
| 🫛 Peas | — | — | Nov 23 – Dec 7 |
| 🥕 Carrots | — | — | Dec 14 – Jan 4 |
| 🥦 Broccoli | Nov 16 – Nov 30 | Dec 14 – Dec 28 | — |
| 🥬 Kale | Nov 23 – Dec 7 | Dec 7 – Dec 21 | Dec 7 – Dec 21 |
| 🥒 Cucumbers | Dec 7 – Dec 14 | Jan 11 – Jan 18 | Jan 11 – Jan 18 |
| 🥒 Zucchini | Dec 7 – Dec 14 | Jan 11 – Jan 18 | Jan 11 – Jan 18 |
| 🫘 Green Beans (Bush) | — | — | Jan 11 – Jan 18 |
| 🌽 Sweet Corn | — | — | Jan 11 – Jan 18 |
| 🌿 Basil | Nov 23 – Dec 7 | Jan 11 – Jan 18 | Jan 18 – Jan 25 |
| 🧄 Garlic | — | — | Fall: Nov 18 – Dec 16 |
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 Ontario International Airport's dates automatically after a lookup.
Reading the season in Ontario International Airport
With roughly 360 frost-free days, Ontario International Airport gardens fit long-season crops — melons, winter squash, sweet potatoes — with room left for spring and fall rounds of greens and roots. The first frost around Dec 30 is late enough that fall planting is a full second season, not an afterthought.