One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Walkertown should be read to determine 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.

Since periwinkles do not do well in cold weather you need to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant periwinkles in Walkertown 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 couple of weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Walkertown. It might get as low as 5°F during the coldest months of winter.

Since the USDA zone info for Walkertown may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Walkertown you get surprised by a frost after April 15 so make sure that you are ready to cover your periwinkles in the event of a surprise late frost.

USDA Zone Info for Walkertown

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 Walkertown

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