One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of determining when it's a good idea to plant tall phlox is to refer to the USDA zone info for Whiteland.

Planting Calendar for Tall Phlox

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

Tall Phlox do well in moderate cold which means that you can start planting them earlier than other plants that might not handle the cold.

The earliest that you can plant tall phlox in Whiteland 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 tall phlox and expect a good harvest is probably September. Any later than that and your tall phlox may not have a chance to fully mature. Starting your tall 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 Whiteland. It might get as low as -15°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Whiteland may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Whiteland there is a last frost after April 15 so make sure that you are ready to cover your tall phlox if you have one of those late frosts.

USDA Zone Info for Whiteland

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 Whiteland

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