One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Corrales you should be able to figure out when it's possible to plant periwinkles.

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 it's necessary to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant periwinkles in Corrales 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. You probably don't want to wait any later than that or else your periwinkles may not have a chance to grow to maturity. Starting your periwinkles indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Corrales. In the coldest months of winter you should expect an average low temperature of 5°F.

Since the USDA zone info for Corrales is not always accurate the actual date of last frost is different every year. Since half of the time in Corrales you get a frost after April 15 be ready to protect your periwinkles if you have a surprise late frost.

USDA Zone Info for Corrales

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 Corrales

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