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

In Hibbing you can estimate when it's possible to plant dipladenia by using the USDA zone info.

Planting Calendar for Dipladenia

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

It's probably a bad idea to plant dipladenia until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant dipladenia in Hibbing 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 dipladenia and expect a good harvest is probably August. If you wait any later than that and your dipladenia may not have a chance to fully mature. If you are starting your dipladenia indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average all chance of frost has passed is on May 15 in Hibbing. In the coldest months of winter you can expect an average low temperature of -35°F.

Just be sure to remember that USDA zone info for Hibbing is an average and the actual date of last frost will vary from year to year. Since half of the time in Hibbing it frosts late in the year after May 15 be ready to cover your dipladenia if you have a surprise late frost.

USDA Zone Info for Hibbing

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-35°F
Highest Expected Low	-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Hibbing

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