Cambridge, OH planting zone & frost dates
Cambridge is in USDA hardiness zone 6b. The last spring frost usually comes around April 28 and the first fall frost around October 17, for a growing season of about 172 days.
Planting calendar for Cambridge
Dates are counted from the average last spring frost (April 28) using the typical timing recommended by U.S. extension services. Warm-season crops go out only after the danger of frost has passed and the soil has warmed.
| Crop | When |
|---|---|
| Tomatoes | Start seeds indoors: Mar 3 – Mar 17 Transplant outdoors: May 5 – May 12 |
| Peppers | Start seeds indoors: Feb 17 – Mar 3 Transplant outdoors: May 12 – May 19 |
| Eggplant | Start seeds indoors: Feb 17 – Mar 3 Transplant outdoors: May 12 – May 19 |
| Broccoli | Start seeds indoors: Feb 17 – Mar 3 Transplant outdoors: Mar 31 – Apr 14 |
| Cabbage | Start seeds indoors: Feb 17 – Mar 3 Transplant outdoors: Mar 31 – Apr 14 |
| Onions (sets) | Plant outdoors: Mar 31 – Apr 14 |
| Peas | Sow outdoors: Mar 17 – Mar 31 |
| Spinach | Sow outdoors: Mar 17 – Mar 31 |
| Lettuce | Sow outdoors: Mar 31 – Apr 14 |
| Carrots | Sow outdoors: Mar 31 – Apr 14 |
| Potatoes | Plant outdoors: Mar 31 – Apr 14 |
| Beans | Sow outdoors: May 5 – May 12 |
| Sweet corn | Sow outdoors: May 5 – May 12 |
| Cucumbers | Sow outdoors: May 5 – May 12 |
| Squash & zucchini | Sow outdoors: May 5 – May 12 |
| Basil | Start seeds indoors: Mar 17 – Mar 31 Transplant outdoors: May 5 – May 12 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Aug 22 (8 weeks before the average first fall frost on Oct 17).
Useful for zone 6b gardens
- Seed starting kit with dome — to start seeds indoors before the last frost
- LED grow light for seedlings — stops leggy seedlings
- Frost cloth / plant covers — for late spring and early fall frosts
- Soil thermometer — warm-season crops need soil above 60°F
- Cold frame / mini greenhouse — adds weeks to a short season
As an Amazon Associate, FrostZoneMap earns from qualifying purchases, at no extra cost to you.
Frost risk in detail
| 90% chance | 50% chance | 10% chance | |
|---|---|---|---|
| Last 32°F frost in spring is after | Apr 13 | Apr 28 | May 15 |
| First 32°F frost in fall is before | Oct 28 | Oct 17 | Oct 3 |
How to read it: in spring there is a 10% chance of a frost after May 15, so that is a safe date for tender plants. In fall there is a 10% chance of frost before October 3. A hard freeze (28°F) usually ends around April 15.
Hardiness zone by ZIP code in Cambridge
- 43725 zone 6b
Nearby cities
- Coshocton zone 6b, last frost Apr 27
- Zanesville zone 6b, last frost Apr 26
- New Philadelphia zone 6b, last frost Apr 30
- Dover zone 6b, last frost Apr 30
- Marietta zone 6b, last frost Apr 18
- Massillon zone 6b, last frost Apr 24
- Canton zone 6b, last frost Apr 24
- Newark zone 6a, last frost Apr 29
Questions
What growing zone is Cambridge, OH?
Cambridge is in USDA Plant Hardiness Zone 6b (average extreme winter low -5°F to 0°F), according to the USDA 2023 map.
When is the last frost in Cambridge?
The average last spring frost (32°F) in Cambridge is April 28. There is still a 10% chance of frost until May 15.
When can I plant tomatoes in Cambridge?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around May 5 – May 12. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Cambridge, OH (USC00331197), 2.4 km (1.5 mi) from the city center, elevation 244 m, based on 30 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.