The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Jackson should be looked at to estimate when you can plant portulaca.

Planting Calendar for Portulaca

Frost tolerance for portulaca:	Not tolerant of frost.
When to plant:	After the last frost.

It's a bad idea to plant portulaca until after the last frost because they are not cold tolerant.

The earliest that you can plant portulaca in Jackson 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 portulaca and expect a good harvest is probably August. You probably don't want to wait any later than that or else your portulaca may not have a chance to really do well. You can get started a couple of weeks earlier by starting your portulaca indoors.

Last Frost Date

The average date of last frost is April 15 in Jackson. You should expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Jackson may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Jackson you get surprised by a frost after April 15 be ready to protect your portulaca in the event of one of those late frosts.

USDA Zone Info for Jackson

Here is the info for USDA Zone 6a.

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

Plants to Grow in Jackson

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