The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of figuring out when to plant periwinkles is to refer to the USDA zone info for Pleasant Grove.

Planting Calendar for Periwinkles

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

Since periwinkles are not cold tolerant you must wait until after the last frost has passed before you can plant them.

The earliest that you can plant periwinkles in Pleasant Grove 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 fully mature. Starting your periwinkles indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Pleasant Grove. In the coldest months of winter you can expect an average low temperature of 0°F.

It's important to remember that the actual date of last frost is an average because it is based on the USDA zone info for Pleasant Grove and it is different every year. Half of the time in Pleasant Grove you get a frost after April 15 so just be sure to be ready to cover your periwinkles in the event of one of those late frosts.

USDA Zone Info for Pleasant Grove

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 Pleasant Grove

You may be interested in your other planting guides for Pleasant Grove.