The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Las Cruces you can figure out when it's the best time to plant dahlia by using the USDA zone info.

Planting Calendar for Dahlia

Frost tolerance for dahlia:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since dahlia require warm weather you really should wait until after the last frost when the weather gets warmer before you can plant them.

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

The last month that you can plant dahlia and expect a good harvest is probably August. If you wait any later than that and your dahlia may not have a chance to fully mature. If you are starting your dahlia indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on March 15 in Las Cruces. It might get as low as 10°F during the coldest months of winter.

Since the USDA zone info for Las Cruces is just an average the actual date of last frost is different every year. Since half of the time in Las Cruces last frost occurs after March 15 be ready to protect your dahlia if you have a late frost.

USDA Zone Info for Las Cruces

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°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 15°F.

Plants to Grow in Las Cruces

You may be interested in your other planting guides for Las Cruces.