Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Grain Valley should be reffered to in order to figure out when you can plant phlox.

Planting Calendar for Phlox

Frost tolerance for phlox:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Phlox do well in moderate cold which tells us that you can plant them earlier than other plants that might not handle the cold.

The earliest that you can plant phlox in Grain Valley 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 phlox and expect a good harvest is probably September. You probably don't want to wait any later than that or else your phlox may not have a chance to grow to maturity. Starting your phlox indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Grain Valley. It might get as low as -10°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Grain Valley is not always accurate and the actual date of last frost is different every year. Half of the time in Grain Valley last frost occurs after April 15 so just be sure to be ready to protect your phlox in the event of a late frost.

USDA Zone Info for Grain Valley

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Grain Valley

You may be interested in your other planting guides for Grain Valley.