The USDA Zone info is a great tool for gardeners to help us determine 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.

The earliest that you can plant hardy hibiscus in La Crescent can be determined by reviewing 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.

Hardy Hibiscus are very cold tolerant which tells us that you can start planting them much earlier than more sensitive plants.

The earliest that you can plant hardy hibiscus in La Crescent 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 fully mature. You can get started a little bit earlier by starting your hardy hibiscus indoors.

Last Frost Date

On average the last frost is on May 15 in La Crescent. You should expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for La Crescent may not be accurate from year to year the actual date of last frost is different every year. Since half of the time in La Crescent you get a frost after May 15 be ready to protect your hardy hibiscus if you have one of those late frosts.

USDA Zone Info for La Crescent

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 La Crescent

You may be interested in your other planting guides for La Crescent.