One of the first steps you take when you are figuring out your gardening schedule is find your 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 first chance to plant periwinkles in Sparta can be figured out by using the USDA zone info.

Planting Calendar for Periwinkles

Frost tolerance for periwinkles:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

Since periwinkles are not cold tolerant it's important to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant periwinkles in Sparta 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. You can get started a little bit earlier by starting your periwinkles indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Sparta. It might get as low as 0°F during the coldest months of winter.

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

USDA Zone Info for Sparta

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 Sparta

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