The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By checking out the USDA zone info for Romeoville you will be able to determine when it's the best time to plant summer savory.

Planting Calendar for Summer Savory

Frost tolerance for summer savory:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

You can plant summer savory a bit earlier in the year because they are one of those plants that can tolerate a tiny bit of cold weather.

The earliest that you can plant summer savory in Romeoville is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant summer savory and expect a good harvest is probably August. If you wait any later than that and your summer savory may not have a chance to grow to maturity. If you are starting your summer savory indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Romeoville. It might get as low as -15°F during the coldest months of winter.

It's important to remember that USDA zone info for Romeoville is not always accurate and the actual date of last frost is different every year. Since half of the time in Romeoville there is a last frost after April 15 be ready to cover your summer savory in the event of a late frost.

USDA Zone Info for Romeoville

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 Romeoville

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