One of the first steps you take when you are getting a good idea your gardening schedule is find your 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.

A common way of determining when to plant gypsophila is to use the USDA zone info for Hartsville.

Planting Calendar for Gypsophila

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

Since gypsophila are moderately cold tolerant you can plant them just a bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant gypsophila in Hartsville 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 gypsophila and expect a good harvest is probably September. Any later than that and your gypsophila may not have a chance to grow to maturity. Starting your gypsophila indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Hartsville. In the coldest months of winter you can expect an average low temperature of 0°F.

Since the USDA zone info for Hartsville is just an average the actual date of last frost changes from year to year. Since half of the time in Hartsville last frost occurs after April 15 be ready to protect your gypsophila if you have a surprise late frost.

USDA Zone Info for Hartsville

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 Hartsville

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