One of the best tools that you have as gardeners to help us figure out 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.

You should be able to figure out when to plant four-o-clock flower by reviewing the USDA zone info for Mesquite.

Planting Calendar for Four-o-clock flower

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

It's probably not a good idea to plant four-o-clock flower until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant four-o-clock flower in Mesquite 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 really do well. You can get started a few weeks earlier by starting your four-o-clock flower indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Mesquite. You should expect an average low temperature of 15°F in the coldest months of winter.

Since the USDA zone info for Mesquite is just an average the actual date of last frost will vary from year to year. Since half of the time in Mesquite you get a frost after March 15 be ready to cover your four-o-clock flower if you have a late frost.

USDA Zone Info for Mesquite

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°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 20°F.

Plants to Grow in Mesquite

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