The USDA Zone info is a great tool for gardeners to help us figure out 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 New Richmond you can estimate when it's possible to plant hardy hibiscus by referring to the USDA zone info.

Planting Calendar for Hardy Hibiscus

Frost tolerance for hardy hibiscus:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since hardy hibiscus are very cold tolerant you can plant them a lot earlier in the year than more sensitive plants.

The earliest that you can plant hardy hibiscus in New Richmond 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 hardy hibiscus and expect a good harvest is probably August. If you wait any later than that and your hardy hibiscus may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your hardy hibiscus indoors.

Last Frost Date

In New Richmond the average date of last frost happens on May 15. In the coldest months of winter you should expect an average low temperature of -25°F.

Keep in mind that USDA zone info for New Richmond 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 New Richmond you get surprised by a frost after May 15 be ready to cover your hardy hibiscus in the event of one of those late frosts.

USDA Zone Info for New Richmond

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 New Richmond

You may be interested in your other planting guides for New Richmond.