Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By checking out the USDA zone info for Oswego it's a good idea to figure out when it's possible to 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.

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

The earliest that you can plant vinca vine in Oswego 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. If you wait 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 little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Oswego. You can expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Oswego is not always accurate the actual date of last frost will vary from year to year. Since half of the time in Oswego you get a frost after April 15 be ready to cover your vinca vine if you have a late frost.

USDA Zone Info for Oswego

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 Oswego

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