When can I plant Cucumbers in Zone 4b

The USDA Zone info is a great tool for gardeners to help us estimate our gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

You will be able to estimate when it's a good idea to plant cucumbers by reviewing the USDA zone info for Zone 4b.


Planting Calendar for Cucumbers

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

Cucumbers do not do well in cold weather which tells us that it is necessary to wait until it warms up after the last frost before you can plant them.

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

The earliest that you can plant cucumbers in Zone 4b is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant cucumbers and expect a good harvest is probably August. You probably don't want to wait any later than that or else your cucumbers may not have a chance to fully mature. You can get started a few weeks earlier by starting your cucumbers indoors.

Last Frost Date

In Zone 4b the average date of last frost happens on May 15. In the coldest months of winter we should expect an average low temperature of -25°F.

Keep in mind that USDA zone info for Zone 4b is not always accurate and our actual date of last frost is different every year. Since half of the time in Zone 4b we get surprised by a frost after May 15 be ready to cover your cucumbers if we have a late frost.

USDA Zone Info for Zone 4b

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)May 15
Average Date of First Frost (fall)September 15
Lowest Expected Low-25°F
Highest Expected Low-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Zone 4b

You may be interested in our other planting guides for Zone 4b.