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

In Hagerstown you can determine when it's a good idea to plant phlox by looking at the USDA zone info.

Planting Calendar for Phlox

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

Phlox tend to make it in mild cold which means that you can plant them a little earlier in the year than other frost tender plants.

The earliest that you can plant phlox in Hagerstown 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. You can get started a few weeks earlier by starting your phlox indoors.

Last Frost Date

On average the last frost is on April 15 in Hagerstown. It might get as low as -5°F during the coldest months of winter.

Since the USDA zone info for Hagerstown is just an average the actual date of last frost will vary from year to year. Since half of the time in Hagerstown there is a last frost after April 15 be ready to cover your phlox if you have a late frost.

USDA Zone Info for Hagerstown

Here is the info for USDA Zone 6b.

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

Plants to Grow in Hagerstown

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