Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Kutztown you can estimate when it's possible to plant lithospermum by referring to the USDA zone info.

Planting Calendar for Lithospermum

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

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

The earliest that you can plant lithospermum in Kutztown 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. Any later than that and your lithospermum may not have a chance to grow to maturity. You can get started a little bit earlier by starting your lithospermum indoors.

Last Frost Date

The average date of last frost is April 15 in Kutztown. You should expect an average low temperature of -5°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Kutztown is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Kutztown it frosts late in the year after April 15 be ready to protect your lithospermum if you have one of those late frosts.

USDA Zone Info for Kutztown

Here is the info for USDA Zone 6b.

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

Plants to Grow in Kutztown

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