One of the best tools that you have as gardeners to help us figure out 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.

The USDA zone info for Wheeling should be reffered to in order to figure out when it's possible to plant alyssum.

Planting Calendar for Alyssum

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

Alyssum do ok in cold weather which means that you can plant them much earlier in the year than other frost tender plants.

The earliest that you can plant alyssum in Wheeling 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 really do well. If you are starting your alyssum indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Wheeling. It might get as low as -15°F during the coldest months of winter.

It's important to remember that USDA zone info for Wheeling may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in Wheeling you get a frost after April 15 so be sure to be ready to protect your alyssum in the event of a surprise late frost.

USDA Zone Info for Wheeling

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 Wheeling

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