The USDA Zone info is a great tool for gardeners to help us determine 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 making a decision about when it's possible to plant bower vine is to use the USDA zone info for Stewartville.

Planting Calendar for Bower Vine

Frost tolerance for bower vine:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's not a good idea to plant bower vine until after the last frost has passed because they require warm weather.

The earliest that you can plant bower vine in Stewartville is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant bower vine and expect a good harvest is probably August. Any later than that and your bower vine may not have a chance to fully mature. Starting your bower vine indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on May 15 in Stewartville. In the coldest months of winter you should expect an average low temperature of -25°F.

Always keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Stewartville and it will vary from year to year. Half of the time in Stewartville it frosts late in the year after May 15 so make sure that you are prepared to cover your bower vine if you have a late frost.

USDA Zone Info for Stewartville

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 Stewartville

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