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.

A way of figuring out when it's the best time to plant dianthus is to examine the USDA zone info for Vienna.

Planting Calendar for Dianthus

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

Dianthus do well in moderate cold which means that you can start planting them earlier than other plants that might not handle the cold.

The earliest that you can plant dianthus in Vienna 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. Any later than that and your dianthus may not have a chance to fully mature. You can get started a little bit earlier by starting your dianthus indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Vienna. It might get as low as -5°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Vienna is not always accurate and the actual date of last frost is different every year. Since half of the time in Vienna last frost occurs after April 15 be ready to protect your dianthus in the event of a surprise late frost.

USDA Zone Info for Vienna

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Vienna

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