The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Minneapolis you can estimate when to plant hypericum by checking out the USDA zone info.

Planting Calendar for Hypericum

Frost tolerance for hypericum:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant hypericum slightly earlier in the year because they do ok in moderate cold.

The earliest that you can plant hypericum in Minneapolis is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant hypericum and expect a good harvest is probably August. If you wait any later than that and your hypericum may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your hypericum indoors.

Last Frost Date

On average the last frost has passed is on May 15 in Minneapolis. It might get as low as -25°F during the coldest months of winter.

Since the USDA zone info for Minneapolis may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Minneapolis there is a last frost after May 15 so be sure to be ready to protect your hypericum in the event of a surprise late frost.

USDA Zone Info for Minneapolis

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 Minneapolis

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