When can I plant Tomatos in Zone 1b

Before planting it is a good idea to find our USDA Zone info to figure out our garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

By looking at the USDA zone info for Zone 1b you will be able to determine when you can plant tomatos.


Planting Calendar for Tomatos

Frost tolerance for tomatos: Not tolerant of frost.
When you should plant them: After the last frost has passed.

Tomatos require warm weather which tells us that you must wait until it warms up after the last frost before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant tomatos
Possibly ok, but a risky time to plant tomatos
Probably not a good time to plant tomatos

The earliest that you can plant tomatos in Zone 1b is June. However, you really should wait until July if you don't want to take any chances.

The last month that you can plant tomatos and expect a good harvest is probably July. Any later than that and your tomatos may not have a chance to really do well. Starting your tomatos indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is June 15 in Zone 1b. We should expect an average low temperature of -55°F in the coldest months of winter.

Keep in mind that USDA zone info for Zone 1b may not be accurate from year to year and our actual date of last frost is different every year. Half of the time in Zone 1b there is a last frost after June 15 so make sure that you are prepared to protect your tomatos if we have a late frost.

USDA Zone Info for Zone 1b

Here is the info for USDA Zone 1b.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-55°F
Highest Expected Low-50°F

This means that on a really cold year, the coldest it will get is -55°F. On most years you should be prepared to experience lows near -50°F.

Plants to Grow in Zone 1b

You may be interested in our other planting guides for Zone 1b.