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 Southfield you can estimate when to plant hypericum by looking at 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.

Hypericum can survive in very little cold which means that you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant hypericum in Southfield is March. However, you really should wait until April 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. Any later than that and your hypericum may not have a chance to grow to maturity. Starting your hypericum indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on April 15 in Southfield. In the coldest months of winter you can expect an average low temperature of -10°F.

Always keep in mind that USDA zone info for Southfield is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Southfield it frosts late in the year after April 15 be ready to cover your hypericum if you have a surprise late frost.

USDA Zone Info for Southfield

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Southfield

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