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.

A way of making a decision about when you can plant summer savory is to use the USDA zone info for Glen Ellyn.

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 do ok in moderate cold.

The earliest that you can plant summer savory in Glen Ellyn 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. You probably don't want to wait any later than that or else your summer savory may not have a chance to grow to maturity. You can get started a little bit earlier by starting your summer savory indoors.

Last Frost Date

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

Since the USDA zone info for Glen Ellyn is just an average the actual date of last frost will vary from year to year. Half of the time in Glen Ellyn there is a last frost after April 15 so be sure to be ready to protect your summer savory in the event of a late frost.

USDA Zone Info for Glen Ellyn

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 Glen Ellyn

You may be interested in your other planting guides for Glen Ellyn.