One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can figure out when you can plant periwinkles in Brookings 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.

Periwinkles require warm weather which means that you must wait until it warms up after the last frost has passed before you can plant them.

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

The last month that you can plant periwinkles and expect a good harvest is probably September. If you wait any later than that and your periwinkles may not have a chance to fully mature. You can get started a few weeks earlier by starting your periwinkles indoors.

Last Frost Date

The average date of last frost is February 15 in Brookings. You should expect an average low temperature of 25°F in the coldest months of winter.

Remember that USDA zone info for Brookings is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Brookings there is a last frost after February 15 so make sure that you are ready to protect your periwinkles in the event of a surprise late frost.

USDA Zone Info for Brookings

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Brookings

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