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

One way of determining when it's possible to plant vinca vine is to look at the USDA zone info for Powell.

Planting Calendar for Vinca Vine

Frost tolerance for vinca vine:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since vinca vine are one of those plants that can tolerate a little bit of cold weather you can plant them a little earlier in the year than more sensitive plants.

The earliest that you can plant vinca vine in Powell 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 vinca vine and expect a good harvest is probably August. If you wait any later than that and your vinca vine may not have a chance to really do well. Starting your vinca vine indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on May 15 in Powell. You can expect an average low temperature of -25°F in the coldest months of winter.

Keep in mind that USDA zone info for Powell is just an average and the actual date of last frost will vary from year to year. Since half of the time in Powell last frost occurs after May 15 be ready to cover your vinca vine in the event of one of those late frosts.

USDA Zone Info for Powell

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°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 -20°F.

Plants to Grow in Powell

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