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.

You should be able to figure out when it's a good idea to plant sanvitalia by checking out the USDA zone info for Barnwell.

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 ok in some cold which tells us that you can plant them a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant sanvitalia in Barnwell 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 sanvitalia and expect a good harvest is probably August. Any later than that and your sanvitalia may not have a chance to really do well. You can get started a couple of weeks earlier by starting your sanvitalia indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Barnwell. It might get as low as 10°F during the coldest months of winter.

Remember that USDA zone info for Barnwell is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Barnwell it frosts late in the year after March 15 so always be ready to cover your sanvitalia in the event of a late frost.

USDA Zone Info for Barnwell

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 Barnwell

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