When to Plant Creeping Phlox in Princeton, IL

Before planting it is a good idea to find your USDA Zone info to figure out 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 first opportunity to plant creeping phlox in Princeton can be figured out 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.

Creeping Phlox do well in quite a bit of cold which tells us that you can plant them much earlier in the year than other plants that might not handle the cold.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant creeping phlox
Possibly ok, but a risky time to plant creeping phlox
Probably not a good time to plant creeping phlox

The earliest that you can plant creeping phlox in Princeton 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. You probably don't want to wait any later than that or else your creeping phlox may not have a chance to really do well. If you are starting your creeping phlox indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Princeton. In the coldest months of winter you can expect an average low temperature of -15°F.

Always keep in mind that USDA zone info for Princeton is an average and the actual date of last frost changes from year to year. Half of the time in Princeton you get surprised by a frost after April 15 so be sure to be ready to protect your creeping phlox if you have a late frost.

USDA Zone Info for Princeton

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 Princeton

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