One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of determining when to plant hibiscus is to refer to the USDA zone info for Circle Pines.

Planting Calendar for Hibiscus

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

You should not plant hibiscus until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant hibiscus in Circle Pines is May. However, you really should wait until June 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 grow to maturity. Starting your hibiscus indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost has passed is on May 15 in Circle Pines. In the coldest months of winter you should expect an average low temperature of -25°F.

Since the USDA zone info for Circle Pines is just an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Circle Pines you get surprised by a frost after May 15 be ready to protect your hibiscus in the event of one of those late frosts.

USDA Zone Info for Circle Pines

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 Circle Pines

You may be interested in your other planting guides for Circle Pines.