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

A common way of estimating when it's possible to plant sweet williams is to check out the USDA zone info for Tecumseh.

Planting Calendar for Sweet Williams

Frost tolerance for sweet williams:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Sweet Williams do well in moderate cold which means that you can start planting them earlier than other plants that might not handle the cold.

The earliest that you can plant sweet williams in Tecumseh 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 sweet williams and expect a good harvest is probably September. You probably don't want to wait any later than that or else your sweet williams may not have a chance to really do well. Starting your sweet williams indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Tecumseh. You should expect an average low temperature of 0°F in the coldest months of winter.

Since the USDA zone info for Tecumseh is just an average the actual date of last frost is different every year. Half of the time in Tecumseh you get surprised by a frost after April 15 so make sure that you are ready to cover your sweet williams in the event of a late frost.

USDA Zone Info for Tecumseh

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Tecumseh

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