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.

One way of making a decision about when it's a good idea to plant summer savory is to check out the USDA zone info for Tiffin.

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.

Since summer savory are barely cold tolerant you can plant them just a tiny bit earlier in the year than more sensitive plants.

The earliest that you can plant summer savory in Tiffin 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. Any later than that and your summer savory may not have a chance to fully mature. 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 Tiffin. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Tiffin is not always accurate the actual date of last frost can change quite a bit from year to year. Half of the time in Tiffin you get surprised by a frost after April 15 so just be sure to be ready to protect your summer savory if you have a surprise late frost.

USDA Zone Info for Tiffin

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Tiffin

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