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

You can estimate when it's possible to plant okra in Zone 4a by looking at the USDA zone info.

Planting Calendar for Okra

Frost tolerance for okra:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's a bad idea to plant okra until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant okra in Zone 4a 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 okra and expect a good harvest is probably August. If you wait any later than that and your okra may not have a chance to really do well. If you are starting your okra indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on May 15 in Zone 4a. In the coldest months of winter you should expect an average low temperature of -30°F.

Remember that USDA zone info for Zone 4a may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Zone 4a last frost occurs after May 15 be ready to protect your okra in the event of a surprise late frost.

USDA Zone Info for Zone 4a

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Zone 4a

You may be interested in your other planting guides for Zone 4a.