Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You will be able to estimate when it's the best time to plant cucumbers by using the USDA zone info for Romeoville.

Planting Calendar for Cucumbers

Frost tolerance for cucumbers:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's probably not a good idea to plant cucumbers until after all chance of frost has passed because they require warm weather.

The earliest that you can plant cucumbers in Romeoville is April. However, you really should wait until May 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. If you wait any later than that and your cucumbers may not have a chance to really do well. You can get started a little bit earlier by starting your cucumbers indoors.

Last Frost Date

On average the last frost is on April 15 in Romeoville. In the coldest months of winter you can expect an average low temperature of -15°F.

Remember that USDA zone info for Romeoville is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Romeoville last frost occurs after April 15 so make sure that you are ready to protect your cucumbers if you have a late frost.

USDA Zone Info for Romeoville

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Romeoville

You may be interested in your other planting guides for Romeoville.