The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant trailing portulaca in Manitowoc should be figured out by using the USDA zone info.

Planting Calendar for Trailing Portulaca

Frost tolerance for trailing portulaca:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

You should not plant trailing portulaca until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant trailing portulaca in Manitowoc 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. Any later than that and your trailing portulaca may not have a chance to fully mature. Starting your trailing portulaca 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 April 15 in Manitowoc. In the coldest months of winter you should expect an average low temperature of -15°F.

Just be sure to remember that USDA zone info for Manitowoc may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Manitowoc you get a frost after April 15 so be sure to be ready to protect your trailing portulaca in the event of a surprise late frost.

USDA Zone Info for Manitowoc

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 Manitowoc

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