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

In Winona you can figure out when it's possible to plant four o' clock by looking at the USDA zone info.

Planting Calendar for Four O' Clock

Frost tolerance for four o' clock:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You should not plant four o' clock until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant four o' clock in Winona 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 four o' clock and expect a good harvest is probably August. You probably don't want to wait any later than that or else your four o' clock may not have a chance to really do well. If you are starting your four o' clock indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Winona. You should expect an average low temperature of 5°F in the coldest months of winter.

Always keep in mind that USDA zone info for Winona 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 Winona there is a last frost after April 15 so just be sure to be ready to protect your four o' clock in the event of one of those late frosts.

USDA Zone Info for Winona

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Winona

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