One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. 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 alyssum in Dewitt should be estimated by referring to the USDA zone info.

Planting Calendar for Alyssum

Frost tolerance for alyssum:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since alyssum do well in cold you can plant them a lot earlier in the year than more sensitive plants.

The earliest that you can plant alyssum in Dewitt 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 alyssum and expect a good harvest is probably September. Any later than that and your alyssum may not have a chance to fully mature. You can get started a few weeks earlier by starting your alyssum indoors.

Last Frost Date

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

Always keep in mind that the actual date of last frost is an average because it is based on the USDA zone info for Dewitt and it will vary from year to year. Since half of the time in Dewitt last frost occurs after April 15 be ready to protect your alyssum in the event of a surprise late frost.

USDA Zone Info for Dewitt

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 Dewitt

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