The USDA Zone info is a great tool for gardeners to help us determine your gardening 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 figuring out when it's possible to plant rosemary is to refer to the USDA zone info for Bensenville.

Planting Calendar for Rosemary

Frost tolerance for rosemary:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Rosemary can survive in cold weather which tells us that you can plant them much earlier in the year than more sensitive plants.

The earliest that you can plant rosemary in Bensenville 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 rosemary and expect a good harvest is probably September. You probably don't want to wait any later than that or else your rosemary may not have a chance to really do well. You can get started a few weeks earlier by starting your rosemary indoors.

Last Frost Date

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

It's important to remember that USDA zone info for Bensenville is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Bensenville last frost occurs after April 15 be ready to cover your rosemary in the event of one of those late frosts.

USDA Zone Info for Bensenville

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 Bensenville

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