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

One way of determining when it's the best time to plant lithospermum is to look at the USDA zone info for Bucyrus.

Planting Calendar for Lithospermum

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

Since lithospermum do not do well in cold weather you really should wait until after all chance of frost has passed before you can plant them.

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

Last Frost Date

On average all chance of frost has passed is on April 15 in Bucyrus. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Bucyrus is just an average the actual date of last frost will vary from year to year. Half of the time in Bucyrus you get a frost after April 15 so always be ready to cover your lithospermum if you have a late frost.

USDA Zone Info for Bucyrus

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 Bucyrus

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