Before planting it is a good idea to find your USDA Zone info to determine 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.

In Fort Collins you can estimate when it's possible to plant creeping phlox by reviewing the USDA zone info.

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 one of those plants that can tolerate quite a bit of cold weather you can plant them earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant creeping phlox in Fort Collins is February. However, you really should wait until March 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 September. If you wait any later than that and your creeping phlox may not have a chance to fully mature. Starting your creeping phlox indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Fort Collins. It might get as low as -15°F during the coldest months of winter.

It's important to remember that USDA zone info for Fort Collins is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Fort Collins it frosts late in the year after April 15 so just be sure to be ready to cover your creeping phlox in the event of one of those late frosts.

USDA Zone Info for Fort Collins

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 Fort Collins

You may be interested in your other planting guides for Fort Collins.