When to Plant Tall Phlox in Middletown, PA

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

By looking at the USDA zone info for Middletown you should be able to figure out when it's possible to plant tall phlox.


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 tend to make it in some cold which means that you can plant them a little bit earlier in the year than more sensitive plants.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant tall phlox
Possibly ok, but a risky time to plant tall phlox
Probably not a good time to plant tall phlox

The earliest that you can plant tall phlox in Middletown 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. You probably don't want to wait any later than that or else 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 the last frost is on April 15 in Middletown. In the coldest months of winter you can expect an average low temperature of 0°F.

Just be sure to remember that USDA zone info for Middletown is just an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Middletown you get surprised by a frost after April 15 be ready to protect your tall phlox in the event of one of those late frosts.

USDA Zone Info for Middletown

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low0°F
Highest Expected Low5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Middletown

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