The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of making a decision about when it's possible to plant phlox is to refer to the USDA zone info for Westbrook.

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

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

Last Frost Date

The average date of last frost is April 15 in Westbrook. You can expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Westbrook may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Since half of the time in Westbrook you get a frost after April 15 be ready to protect your phlox in the event of one of those late frosts.

USDA Zone Info for Westbrook

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 Westbrook

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