Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Duarte it's a good idea to determine when you can plant dianthus.

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 tells us that you can plant them a little bit earlier than other frost tender plants.

The earliest that you can plant dianthus in Duarte 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. You can get started a little bit earlier by starting your dianthus indoors.

Last Frost Date

The average date of last frost is January 31 in Duarte. It might get as low as 30°F during the coldest months of winter.

Remember that the actual date of last frost may not be accurate from year to year because it is based on the USDA zone info for Duarte and it will vary from year to year. Half of the time in Duarte there is a last frost after January 31 so just be sure to be ready to cover your dianthus in the event of a late frost.

USDA Zone Info for Duarte

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Duarte

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