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.

One way of figuring out when you can plant tall phlox is to consult the USDA zone info for Carrizo Springs.

Planting Calendar for Tall Phlox

Frost tolerance for tall phlox:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since tall phlox are moderately cold tolerant 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 tall phlox in Carrizo Springs 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 tall phlox and expect a good harvest is probably October. Any later than that and your tall phlox may not have a chance to really do well. You can get started a little bit earlier by starting your tall phlox indoors.

Last Frost Date

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

Since the USDA zone info for Carrizo Springs may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Carrizo Springs last frost occurs after February 15 be ready to cover your tall phlox in the event of a late frost.

USDA Zone Info for Carrizo Springs

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 Carrizo Springs

You may be interested in your other planting guides for Carrizo Springs.