The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A common way of determining when it's the best time to plant veronica is to examine the USDA zone info for Charleston.

Planting Calendar for Veronica

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

You can plant veronica a little earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant veronica in Charleston 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 veronica and expect a good harvest is probably September. You probably don't want to wait any later than that or else your veronica may not have a chance to fully mature. If you are starting your veronica indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Charleston the average date of last frost happens on April 15. You can expect an average low temperature of 0°F in the coldest months of winter.

Remember that USDA zone info for Charleston is just an average and the actual date of last frost is different every year. Since half of the time in Charleston you get surprised by a frost after April 15 be ready to protect your veronica if you have one of those late frosts.

USDA Zone Info for Charleston

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

This means that on a really cold year, the coldest it will get is 0°F. On most years you should be prepared to experience lows near 5°F.

Plants to Grow in Charleston

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