The USDA Zone info is a great tool for gardeners to help us estimate 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.

The USDA zone info for Decatur can be reffered to in order to determine when you can plant lithospermum.

Planting Calendar for Lithospermum

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

Lithospermum require warm weather which means that it's important to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant lithospermum in Decatur 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. Starting your lithospermum indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Decatur. You should expect an average low temperature of 5°F in the coldest months of winter.

It's important to remember that USDA zone info for Decatur is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Decatur there is a last frost after April 15 so just be sure to be ready to cover your lithospermum if you have one of those late frosts.

USDA Zone Info for Decatur

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Decatur

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