The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You will be able to figure out when you can plant creeping phlox by using the USDA zone info for Hermiston.

Planting Calendar for Creeping Phlox

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

You can plant creeping phlox much earlier in the year because they do well in cold.

The earliest that you can plant creeping phlox in Hermiston 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. Any later than that and your creeping phlox may not have a chance to really do well. You can get started a little bit earlier by starting your creeping phlox indoors.

Last Frost Date

In Hermiston the average date of last frost happens on April 15. You should expect an average low temperature of 0°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Hermiston is just an average and the actual date of last frost will vary from year to year. Since half of the time in Hermiston there is a last frost after April 15 be ready to protect your creeping phlox in the event of a surprise late frost.

USDA Zone Info for Hermiston

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Hermiston

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