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.

The first chance to plant abutilon in Havre can be determined by using the USDA zone info.

Planting Calendar for Abutilon

Frost tolerance for abutilon:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

It's not a good idea to plant abutilon until after the last frost when the weather gets warmer because they require warm weather.

The earliest that you can plant abutilon in Havre 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 abutilon and expect a good harvest is probably August. You probably don't want to wait any later than that or else your abutilon may not have a chance to fully mature. You can get started a few weeks earlier by starting your abutilon indoors.

Last Frost Date

In Havre the average date of last frost happens on May 15. You can expect an average low temperature of -30°F in the coldest months of winter.

Since the USDA zone info for Havre is an average the actual date of last frost will vary from year to year. Since half of the time in Havre it frosts late in the year after May 15 be ready to protect your abutilon if you have a late frost.

USDA Zone Info for Havre

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 Havre

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