One of the best tools that you have as gardeners to help us figure out 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.

The first opportunity to plant vinca vine in Rhinelander can be estimated by using the USDA zone info.

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 bit earlier in the year than other frost tender plants.

The earliest that you can plant vinca vine in Rhinelander 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. You probably don't want to wait any later than that or else your vinca vine may not have a chance to fully mature. You can get started a little bit earlier by starting your vinca vine indoors.

Last Frost Date

In Rhinelander the average date of last frost happens on May 15. It might get as low as -30°F during the coldest months of winter.

Since the USDA zone info for Rhinelander may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Rhinelander you get a frost after May 15 so make sure that you are prepared to protect your vinca vine if you have one of those late frosts.

USDA Zone Info for Rhinelander

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

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

Plants to Grow in Rhinelander

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