Frost Dates & Planting Calendar for Irondequoit, NY
Plan your garden around Irondequoit, NY's typical frost-free growing season, using NOAA climate normals and a 42-crop planting calendar built for this location.
Last Spring Frost
April 24
Safe May 8
Typical Apr 24
Risky Apr 12
First Fall Frost
October 25
Safe Oct 8
Typical Oct 25
Risky Nov 7
Growing Season
181 days
Typical last frost to typical first frost.
USDA Hardiness Zone
Zone 6b
A classic four-season climate with cold winters and a solid summer growing season.
Data: NOAA station ROCHESTER GTR INTL AP, NY US, 13.3 km away.
—
days until the typical last spring frost
Monthly Temperatures
Avg. high
Avg. temp
Avg. low
Planting Calendar
| Crop | Start indoors | Direct sow | Transplant | Fall planting | Maturity | Notes |
|---|---|---|---|---|---|---|
| Tomato | Feb 27 – Mar 13 | — | May 1 – May 8 | — | 60–85 days | Start indoors 6-8 weeks before last frost; transplant out 1-2 weeks after last frost once soil has warmed. |
| Pepper | Feb 13 – Feb 27 | — | May 1 – May 15 | — | 60–90 days | Slow to germinate; start indoors 8-10 weeks before last frost. Transplant only once nights stay above 55F, 1-3 weeks after last frost. |
| Eggplant | Feb 13 – Feb 27 | — | May 8 – May 15 | — | 65–85 days | Warm-season crop, similar timing to pepper; needs consistently warm soil (65F+) to transplant. |
| Cucumber | Mar 27 – Apr 3 | May 1 – May 8 | May 1 – May 8 | — | 50–65 days | Can be started indoors 3-4 weeks before transplanting, or direct-sown 1-2 weeks after last frost once soil is warm. |
| Zucchini | Apr 3 – Apr 10 | May 1 – May 15 | May 1 – May 8 | — | 45–55 days | Fast-growing squash; direct sow 1-3 weeks after last frost, or start indoors 2-3 weeks early for a head start. |
| Winter Squash | Mar 27 – Apr 3 | May 1 – May 15 | May 1 – May 8 | — | 80–110 days | Long season; direct sow after soil warms, or start indoors 3-4 weeks before last frost in short-season climates. |
| Pumpkin | — | May 1 – May 15 | — | — | 90–120 days | Direct sow 1-3 weeks after last frost; back-time from your first fall frost so the 90-120 day maturity window lands before it. |
| Watermelon | Mar 27 – Apr 3 | — | May 8 – May 15 | — | 70–90 days | Needs warm soil (65F+); start indoors 3-4 weeks before last frost, transplant 2-3 weeks after last frost. |
| Cantaloupe | Mar 27 – Apr 3 | — | May 8 – May 15 | — | 70–90 days | Same warm-soil requirements as watermelon; avoid disturbing roots when transplanting. |
| Corn | — | Apr 24 – May 8 | — | — | 60–100 days | Direct sow at last frost to 2 weeks after, once soil reaches 60F; does not transplant well. Succession sow every 2 weeks. |
| Green Bean | — | Apr 24 – May 8 | — | — | 50–65 days | Direct sow at last frost to 2 weeks after, once soil has warmed; frost-tender, do not rush. |
| Pea | — | Mar 13 – Mar 27 | — | — | 55–70 days | Cold-hardy; direct sow 4-6 weeks before last frost as soon as soil can be worked. |
| Lettuce | — | Mar 27 – Apr 10 | — | Aug 30 – Sep 13 | 45–60 days | Cold-hardy; direct sow 2-4 weeks before last frost. Also transplantable from indoor starts. |
| Spinach | — | Mar 13 – Mar 27 | — | Aug 30 – Sep 13 | 40–50 days | Very cold-hardy; direct sow 4-6 weeks before last frost as soon as soil can be worked. |
| Kale | — | Mar 27 – Apr 10 | — | Aug 16 – Aug 30 | 50–65 days | Cold-hardy; direct sow 2-4 weeks before last frost or start indoors for earlier transplants. |
| Arugula | — | Mar 27 – Apr 10 | — | Sep 13 – Sep 20 | 30–40 days | Fast-growing, cold-tolerant green; direct sow 2-4 weeks before last frost, succession sow every 2-3 weeks. |
| Swiss Chard | — | Apr 3 – Apr 17 | — | — | 50–60 days | Fairly cold-hardy; direct sow 1-3 weeks before last frost. Tolerates light frost in fall too. |
| Broccoli | Mar 6 – Mar 20 | — | Apr 3 – Apr 10 | Aug 23 – Aug 30 | 55–80 days | Start indoors 5-7 weeks before last frost; transplant out 2-3 weeks before last frost (hardens off to light frost). |
| Cauliflower | Mar 6 – Mar 20 | — | Apr 10 – Apr 17 | Aug 16 – Aug 23 | 55–85 days | Fussier than broccoli about temperature swings; start indoors 5-7 weeks before last frost, transplant 1-2 weeks before last frost. |
| Cabbage | Mar 6 – Mar 20 | — | Mar 27 – Apr 10 | Aug 16 – Aug 30 | 60–100 days | Cold-hardy; start indoors 5-7 weeks before last frost, transplant 2-4 weeks before last frost. |
| Brussels Sprouts | Mar 6 – Mar 20 | — | Apr 3 – Apr 17 | — | 90–110 days | Long-season crop best timed to mature after a light fall frost for sweetest flavor; start indoors 5-7 weeks before last frost. |
| Carrot | — | Mar 27 – Apr 10 | — | Aug 2 – Aug 16 | 60–80 days | Direct sow only (does not transplant); sow 2-4 weeks before last frost, as soon as soil can be worked. |
| Beet | — | Mar 27 – Apr 10 | — | Aug 16 – Aug 30 | 50–65 days | Direct sow 2-4 weeks before last frost; tolerates light frost. |
| Radish | — | Mar 20 – Apr 3 | — | Sep 13 – Sep 27 | 22–30 days | Very fast and cold-hardy; direct sow 3-5 weeks before last frost, as soon as soil can be worked. |
| Turnip | — | Mar 27 – Apr 10 | — | Aug 16 – Aug 30 | 40–60 days | Cold-hardy; direct sow 2-4 weeks before last frost. |
| Onion | Feb 13 – Feb 27 | — | Mar 27 – Apr 10 | — | 90–120 days | Start seeds indoors 8-10 weeks before last frost (or use sets/transplants); set out 2-4 weeks before last frost, very cold-tolerant as seedlings. |
| Garlic | — | — | — | Sep 27 – Oct 11 | 240–270 days | Fall-planted crop only; not planted in spring in most climates. |
| Potato | — | Mar 27 – Apr 10 | — | — | 70–120 days | Plant seed potatoes 2-4 weeks before last frost, as soon as soil can be worked and is above 45F; light frost on emerging foliage is usually tolerated. |
| Sweet Potato | — | — | May 8 – May 22 | — | 90–120 days | Set out slips 2-4 weeks after last frost once soil is thoroughly warm (65F+); very frost/cold sensitive. |
| Asparagus | — | — | Mar 27 – Apr 10 | — | 730–1095 days | Perennial; plant crowns 2-4 weeks before last frost as soon as soil can be worked. Takes 2-3 years to full production. |
| Crop | Start indoors | Direct sow | Transplant | Fall planting | Maturity | Notes |
|---|---|---|---|---|---|---|
| Basil | Mar 13 – Mar 20 | — | May 1 – May 8 | — | 50–70 days | Very frost/cold sensitive; start indoors 5-6 weeks before last frost, transplant only after all danger of frost (1-2 weeks after) and nights stay warm. |
| Cilantro | — | Apr 3 – Apr 17 | — | Aug 30 – Sep 13 | 45–70 days | Cool-season, bolts in heat; direct sow 1-3 weeks before last frost, succession sow through spring. |
| Parsley | Feb 27 – Mar 13 | — | Apr 10 – Apr 17 | — | 70–90 days | Slow to germinate; start indoors 6-8 weeks before last frost, transplant 1-2 weeks before last frost (biennial, cold-tolerant). |
| Dill | — | Apr 3 – Apr 17 | — | — | 40–60 days | Taprooted, does not transplant well; direct sow 1-3 weeks before last frost, succession sow through summer. |
| Oregano | Feb 27 – Mar 13 | — | Apr 24 – May 1 | — | 80–90 days | Perennial herb; start indoors 6-8 weeks before last frost, transplant around/just after last frost date. |
| Thyme | Feb 27 – Mar 13 | — | Apr 24 – May 1 | — | 85–95 days | Perennial herb, slow from seed; start indoors 6-8 weeks before last frost, transplant around/after last frost. |
| Crop | Start indoors | Direct sow | Transplant | Fall planting | Maturity | Notes |
|---|---|---|---|---|---|---|
| Sunflower | — | May 1 – May 15 | — | — | 70–100 days | Direct sow 1-3 weeks after last frost once soil has warmed; taprooted, resents transplanting. |
| Zinnia | Mar 27 – Apr 3 | May 1 – May 15 | May 1 – May 8 | — | 60–70 days | Frost-tender; direct sow 1-3 weeks after last frost, or start indoors 3-4 weeks early for earlier blooms. |
| Marigold | Mar 13 – Mar 27 | — | May 1 – May 8 | — | 45–60 days | Frost-tender; start indoors 4-6 weeks before last frost, transplant after all frost danger has passed. |
| Cosmos | Mar 27 – Apr 3 | May 1 – May 15 | May 1 – May 8 | — | 60–90 days | Easy from direct seed 1-3 weeks after last frost; can also start indoors 3-4 weeks early. |
| Nasturtium | — | May 1 – May 15 | — | — | 50–65 days | Frost-tender, resents root disturbance; direct sow 1-3 weeks after last frost once soil has warmed. |
| Dahlia | — | — | May 1 – May 15 | — | 90–120 days | Plant tubers 1-3 weeks after last frost once soil is warm (60F+); very frost-sensitive. |
Date ranges are estimates based on university extension guidelines and this city's NOAA frost normals — not a guarantee. Scroll to see all columns on narrow screens.
Frequently Asked Questions
When is the last frost in Irondequoit, NY?
Based on 1991–2020 NOAA climate normals for the ROCHESTER GTR INTL AP, NY US station, the last spring frost in Irondequoit typically falls around April 24. A cautious gardener might wait until May 8 (only a 10% chance of a later frost), while April 12 marks an earlier, higher-risk planting date.
When is the first frost in Irondequoit, NY in fall?
The first fall frost in Irondequoit typically arrives around October 25. To stay safe, assume frost could start as early as October 8; in milder years it can hold off until November 7.
How long is the growing season in Irondequoit, NY?
Irondequoit's average frost-free growing season is about 181 days, running from the typical last spring frost (April 24) to the typical first fall frost (October 25).
What USDA hardiness zone is Irondequoit, NY in?
Irondequoit, NY is in USDA plant hardiness zone 6b, per the USDA's 2023 Plant Hardiness Zone Map. A classic four-season climate with cold winters and a solid summer growing season.