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.

The earliest that you can plant hibiscus in Providence should be determined by referring to the USDA zone info.

Planting Calendar for Hibiscus

Frost tolerance for hibiscus:	Not tolerant of frost.
When to plant:	After the last frost.

You should not plant hibiscus until after the last frost because they require warm weather.

The earliest that you can plant hibiscus in Providence 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 hibiscus and expect a good harvest is probably August. You probably don't want to wait any later than that or else your hibiscus may not have a chance to fully mature. Starting your hibiscus indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Providence. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Providence is just an average the actual date of last frost will vary from year to year. Half of the time in Providence there is a last frost after April 15 so just be sure to be ready to cover your hibiscus if you have a surprise late frost.

USDA Zone Info for Providence

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Providence

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