One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant pentas in Hinsdale should be figured out by referring to the USDA zone info.

Planting Calendar for Pentas

Frost tolerance for pentas:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Pentas do not do well in cold weather which means that you really should wait until it warms up after the last frost before you can plant them.

The earliest that you can plant pentas in Hinsdale 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 pentas and expect a good harvest is probably August. If you wait any later than that and your pentas may not have a chance to really do well. If you are starting your pentas indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Hinsdale. In the coldest months of winter you can expect an average low temperature of -15°F.

Just be sure to remember that USDA zone info for Hinsdale may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Hinsdale you get surprised by a frost after April 15 so be sure to be ready to protect your pentas in the event of a late frost.

USDA Zone Info for Hinsdale

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 Hinsdale

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