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 Vincennes you can estimate when it's a good idea to plant trailing portulaca by using the USDA zone info.

Planting Calendar for Trailing Portulaca

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

Trailing Portulaca require warm weather which tells us that you need to wait until it warms up after the last frost when the weather gets warmer before you can plant them.

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

Last Frost Date

On average the last frost has passed is on April 15 in Vincennes. You can expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Vincennes is not always accurate the actual date of last frost is different every year. Since half of the time in Vincennes it frosts late in the year after April 15 be ready to protect your trailing portulaca in the event of a late frost.

USDA Zone Info for Vincennes

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 Vincennes

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