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

A common way of determining when to plant phlox is to use the USDA zone info for Gary.

Planting Calendar for Phlox

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

Phlox can survive in mild cold which tells us that you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant phlox in Gary 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. Any later than that and your phlox may not have a chance to really do well. You can get started a couple of weeks earlier by starting your phlox indoors.

Last Frost Date

In Gary the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -15°F.

Just be sure to remember that USDA zone info for Gary is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Gary last frost occurs after April 15 be ready to cover your phlox in the event of a late frost.

USDA Zone Info for Gary

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 Gary

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