Before planting it is a good idea to find your USDA Zone info to estimate your garden 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 Mandan can be used to determine when it's the best time to plant creeping phlox.

Planting Calendar for Creeping Phlox

Frost tolerance for creeping phlox:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since creeping phlox are very cold tolerant you can plant them earlier in the year than more sensitive plants.

The earliest that you can plant creeping phlox in Mandan is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant creeping phlox and expect a good harvest is probably August. You probably don't want to wait any later than that or else your creeping phlox may not have a chance to fully mature. You can get started a few weeks earlier by starting your creeping phlox indoors.

Last Frost Date

The average date of last frost is May 15 in Mandan. It might get as low as -30°F during the coldest months of winter.

Keep in mind that USDA zone info for Mandan is an average and the actual date of last frost will vary from year to year. Since half of the time in Mandan you get a frost after May 15 be ready to cover your creeping phlox in the event of a late frost.

USDA Zone Info for Mandan

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Mandan

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