When can I plant Creeping Phlox in Zone 1b

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

By looking at the USDA zone info for Zone 1b you should be able to determine when it's a good idea to plant creeping phlox.


Planting Calendar for Creeping Phlox

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

Creeping Phlox do well in a bit of cold which tells us that you can plant them much earlier in the year than other frost tender plants.

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 Zone 1b is May. However, you really should wait until June 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 July. 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. You can get started a few weeks earlier by starting your creeping phlox indoors.

Last Frost Date

The average date of last frost is June 15 in Zone 1b. It might get as low as -55°F during the coldest months of winter.

Keep in mind that USDA zone info for Zone 1b is not always accurate and our actual date of last frost is different every year. Half of the time in Zone 1b we get a frost after June 15 so always be ready to protect your creeping phlox in the event of one of those late frosts.

USDA Zone Info for Zone 1b

Here is the info for USDA Zone 1b.

Average Date of Last Frost (spring)June 15
Average Date of First Frost (fall)July 15
Lowest Expected Low-55°F
Highest Expected Low-50°F

This means that on a really cold year, the coldest it will get is -55°F. On most years you should be prepared to experience lows near -50°F.

Plants to Grow in Zone 1b

You may be interested in our other planting guides for Zone 1b.