One of the first steps you take when you are estimating 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 earliest that you can plant periwinkles in Tahlequah can be determined by looking at the USDA zone info.

Planting Calendar for Periwinkles

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

Since periwinkles do not do well in cold weather it's important to wait until after the last frost before you can plant them.

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

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Tahlequah. It might get as low as 0°F during the coldest months of winter.

Keep in mind that USDA zone info for Tahlequah may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Tahlequah you get a frost after April 15 be ready to protect your periwinkles in the event of a late frost.

USDA Zone Info for Tahlequah

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 Tahlequah

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