Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Belvidere should be looked at to figure out when you can plant vinca vine.

Planting Calendar for Vinca Vine

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

Vinca Vine do well in moderate cold which means that you can plant them earlier than more sensitive plants.

The earliest that you can plant vinca vine in Belvidere is February. However, you really should wait until March 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 September. Any later than that and your vinca vine may not have a chance to fully mature. If you are starting your vinca vine indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Belvidere the average date of last frost happens on April 15. You should expect an average low temperature of -15°F in the coldest months of winter.

Remember that USDA zone info for Belvidere is an average and the actual date of last frost is different every year. Since half of the time in Belvidere you get surprised by a frost after April 15 be ready to protect your vinca vine in the event of one of those late frosts.

USDA Zone Info for Belvidere

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-15°F
Highest Expected Low	-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Belvidere

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