Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of getting a good idea when it's the best time to plant hardy hibiscus is to consult the USDA zone info for Prospect.

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 do well in cold weather which tells us that you can plant them quite a bit earlier in the year than more sensitive plants.

The earliest that you can plant hardy hibiscus in Prospect is February. However, you really should wait until March 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 September. If you wait any later than that and your hardy hibiscus may not have a chance to really do well. You can get started a little bit earlier by starting your hardy hibiscus indoors.

Last Frost Date

On average the last frost is on April 15 in Prospect. You should expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Prospect may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Prospect last frost occurs after April 15 be ready to cover your hardy hibiscus in the event of one of those late frosts.

USDA Zone Info for Prospect

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Prospect

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