One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You will be able to determine when it's a good idea to plant sanvitalia by checking out the USDA zone info for Del Rio.

Planting Calendar for Sanvitalia

Frost tolerance for sanvitalia:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Sanvitalia do well in mild cold which means that you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant sanvitalia in Del Rio 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 sanvitalia and expect a good harvest is probably September. You probably don't want to wait any later than that or else your sanvitalia may not have a chance to really do well. Starting your sanvitalia indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Del Rio. It might get as low as 20°F during the coldest months of winter.

Since the USDA zone info for Del Rio is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Del Rio you get a frost after February 15 be ready to cover your sanvitalia if you have a late frost.

USDA Zone Info for Del Rio

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 Del Rio

You may be interested in your other planting guides for Del Rio.