Before planting it is a good idea to find your USDA Zone info to estimate 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.

A way of figuring out when you can plant lithospermum is to examine the USDA zone info for Bloomsburg.

Planting Calendar for Lithospermum

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

You can not plant lithospermum until after the last frost because they do not do well in cold weather.

The earliest that you can plant lithospermum in Bloomsburg 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. If you are starting your lithospermum indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Bloomsburg. You can expect an average low temperature of -10°F in the coldest months of winter.

Since the USDA zone info for Bloomsburg is an average the actual date of last frost will vary from year to year. Since half of the time in Bloomsburg you get a frost after April 15 be ready to cover your lithospermum in the event of one of those late frosts.

USDA Zone Info for Bloomsburg

Here is the info for USDA Zone 6a.

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

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

Plants to Grow in Bloomsburg

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