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

The first opportunity to plant sweet williams in Livonia should be determined by referring to the USDA zone info.

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 ok in mild cold which means that you can plant them a bit earlier in the year than more sensitive plants.

The earliest that you can plant sweet williams in Livonia 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. If you wait any later than that and 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 little bit earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Livonia. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Livonia is just an average the actual date of last frost will vary from year to year. Half of the time in Livonia you get surprised by a frost after April 15 so just be sure to be ready to cover your sweet williams if you have a surprise late frost.

USDA Zone Info for Livonia

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 Livonia

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