The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A common way of figuring out when to plant lithospermum is to refer to the USDA zone info for Carteret.

Planting Calendar for Lithospermum

Frost tolerance for lithospermum:	Not tolerant of frost.
When to plant:	After the last frost.

Since lithospermum require warm weather you have to wait until after the last frost before you can plant them.

The earliest that you can plant lithospermum in Carteret is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant lithospermum and expect a good harvest is probably August. If you wait any later than that and your lithospermum may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your lithospermum indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Carteret. You should expect an average low temperature of 0°F in the coldest months of winter.

Since the USDA zone info for Carteret is not always accurate the actual date of last frost is different every year. Half of the time in Carteret it frosts late in the year after April 15 so make sure that you are ready to protect your lithospermum if you have a late frost.

USDA Zone Info for Carteret

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 Carteret

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