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

It's a good idea to determine when to plant dianthus by looking at the USDA zone info for Lebanon.

Planting Calendar for Dianthus

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

Dianthus are moderately cold tolerant which means that you can start planting them earlier than plants that are more sensitive to the cold.

The earliest that you can plant dianthus 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 dianthus and expect a good harvest is probably September. You probably don't want to wait any later than that or else your dianthus may not have a chance to really do well. You can get started a couple of weeks earlier by starting your dianthus indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Lebanon. In the coldest months of winter you can expect an average low temperature of -10°F.

Just be sure to remember that USDA zone info for Lebanon is not always accurate and the actual date of last frost is different every year. Since half of the time in Lebanon you get surprised by a frost after April 15 be ready to cover your dianthus if you have a late frost.

USDA Zone Info for Lebanon

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 Lebanon

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