One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to determine when it's a good idea to plant dianthus by referring to the USDA zone info for Baytown.

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 plant them earlier than other frost tender plants.

The earliest that you can plant dianthus in Baytown is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant dianthus and expect a good harvest is probably October. If you wait any later than that and your dianthus may not have a chance to grow to maturity. Starting your dianthus indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Baytown. In the coldest months of winter you can expect an average low temperature of 20°F.

Since the USDA zone info for Baytown is just an average the actual date of last frost changes from year to year. Since half of the time in Baytown you get a frost after February 15 be ready to cover your dianthus if you have a surprise late frost.

USDA Zone Info for Baytown

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°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 25°F.

Plants to Grow in Baytown

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