One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The first chance to plant four-o-clock flower in Beloit can be figured out by checking out the USDA zone info.

Planting Calendar for Four-o-clock flower

Frost tolerance for four-o-clock flower:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

You can not plant four-o-clock flower until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant four-o-clock flower in Beloit 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 flower and expect a good harvest is probably August. Any later than that and your four-o-clock flower may not have a chance to grow to maturity. Starting your four-o-clock flower indoors is a great way to get them started a few weeks earlier.

Last Frost Date

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

Keep in mind that USDA zone info for Beloit is just an average and the actual date of last frost will vary from year to year. Since half of the time in Beloit last frost occurs after April 15 be ready to protect your four-o-clock flower in the event of a late frost.

USDA Zone Info for Beloit

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 Beloit

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