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

In Poquoson you can figure out when it's a good idea to plant four-o-clock flower by referring to 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 the last frost.

Four-o-clock flower are not cold tolerant which tells us that you have to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant four-o-clock flower in Poquoson 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. If you wait any later than that and your four-o-clock flower may not have a chance to really do well. Starting your four-o-clock flower indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Poquoson. You should expect an average low temperature of 10°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Poquoson 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 Poquoson you get a frost after March 15 so always be ready to protect your four-o-clock flower in the event of one of those late frosts.

USDA Zone Info for Poquoson

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Poquoson

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