One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's a good idea to estimate when you can plant gherkins by using the USDA zone info for Iowa City.

Planting Calendar for Gherkins

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

Since gherkins require warm weather it is necessary to wait until after the last frost has passed before you can plant them.

The earliest that you can plant gherkins in Iowa City 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 gherkins and expect a good harvest is probably August. Any later than that and your gherkins may not have a chance to fully mature. Starting your gherkins indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Iowa City the average date of last frost happens on April 15. You should expect an average low temperature of -15°F in the coldest months of winter.

Remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Iowa City and it is different every year. Half of the time in Iowa City it frosts late in the year after April 15 so be sure to be ready to protect your gherkins in the event of a late frost.

USDA Zone Info for Iowa City

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 Iowa City

You may be interested in your other planting guides for Iowa City.