One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You should be able to estimate when it's the best time to plant hibiscus by referring to the USDA zone info for Harriman.

Planting Calendar for Hibiscus

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

You should not plant hibiscus until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant hibiscus in Harriman 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 really do well. Starting your hibiscus indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Harriman. It might get as low as 0°F during the coldest months of winter.

Always keep in mind that USDA zone info for Harriman may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Harriman last frost occurs after April 15 so be sure to be ready to protect your hibiscus if you have one of those late frosts.

USDA Zone Info for Harriman

Here is the info for USDA Zone 7a.

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

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

Plants to Grow in Harriman

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