The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Twentynine Palms should be reviewed to figure out when it's the best time to plant dahlia.

Planting Calendar for Dahlia

Frost tolerance for dahlia:	Not tolerant of frost.
When to plant:	After the last frost.

You can not plant dahlia until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant dahlia in Twentynine Palms is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant dahlia and expect a good harvest is probably September. Any later than that and your dahlia may not have a chance to fully mature. You can get started a little bit earlier by starting your dahlia indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Twentynine Palms. It might get as low as 20°F during the coldest months of winter.

Always keep in mind that USDA zone info for Twentynine Palms is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Twentynine Palms last frost occurs after February 15 be ready to protect your dahlia in the event of a surprise late frost.

USDA Zone Info for Twentynine Palms

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 Twentynine Palms

You may be interested in your other planting guides for Twentynine Palms.