One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Trussville you can determine when to plant tall phlox by checking out the USDA zone info.

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 tells us that you can get them planted earlier than other frost tender plants.

The earliest that you can plant tall phlox in Trussville 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. If you wait any later than that and your tall phlox may not have a chance to grow to maturity. You can get started a little bit earlier by starting your tall phlox indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Trussville. In the coldest months of winter you can expect an average low temperature of 5°F.

Keep in mind that USDA zone info for Trussville is just an average and the actual date of last frost changes from year to year. Half of the time in Trussville you get a frost after April 15 so always be ready to protect your tall phlox in the event of one of those late frosts.

USDA Zone Info for Trussville

Here is the info for USDA Zone 7b.

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

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

Plants to Grow in Trussville

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