The USDA Zone info is a great tool for gardeners to help us figure out 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.

By referring to the USDA zone info for Weatherford it's possible to estimate when it's a good idea to plant periwinkles.

Planting Calendar for Periwinkles

Frost tolerance for periwinkles:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's probably a bad idea to plant periwinkles until after the last frost because they require warm weather.

The earliest that you can plant periwinkles in Weatherford is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant periwinkles and expect a good harvest is probably August. Any later than that and your periwinkles may not have a chance to grow to maturity. If you are starting your periwinkles indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Weatherford. In the coldest months of winter you should expect an average low temperature of 0°F.

Since the USDA zone info for Weatherford may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Weatherford last frost occurs after April 15 be ready to protect your periwinkles in the event of a late frost.

USDA Zone Info for Weatherford

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 Low	0°F
Highest Expected Low	5°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 Weatherford

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