One of the first steps you take when you are estimating your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Robstown it's possible to determine when it's possible to plant foxglove.

Planting Calendar for Foxglove

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

Since foxglove do well in moderate cold you can plant them just a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant foxglove in Robstown 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 foxglove and expect a good harvest is probably October. You probably don't want to wait any later than that or else your foxglove may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your foxglove indoors.

Last Frost Date

The average date of last frost is February 15 in Robstown. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Robstown is just an average the actual date of last frost will vary from year to year. Half of the time in Robstown there is a last frost after February 15 so just be sure to be ready to protect your foxglove if you have one of those late frosts.

USDA Zone Info for Robstown

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Robstown

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