Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. 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 Lebanon should be reffered to in order to estimate when it's the best time 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 well in cold which means that you can get them planted much earlier than other frost tender plants.

The earliest that you can plant alyssum in Lebanon 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. If you wait any later than that and your alyssum may not have a chance to really do well. Starting your alyssum indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on April 15 in Lebanon. It might get as low as -20°F during the coldest months of winter.

Always keep in mind that USDA zone info for Lebanon is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in Lebanon you get surprised by a frost after April 15 be ready to cover your alyssum if you have a late frost.

USDA Zone Info for Lebanon

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Lebanon

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