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.

It's possible to figure out when it's possible to plant lithospermum by checking out the USDA zone info for Madisonville.

Planting Calendar for Lithospermum

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

You really shouldn't plant lithospermum until after the last frost has passed because they require warm weather.

The earliest that you can plant lithospermum in Madisonville 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 fully mature. 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 Madisonville. In the coldest months of winter you should expect an average low temperature of 0°F.

Always keep in mind that USDA zone info for Madisonville is not always accurate and the actual date of last frost can change quite a bit from year to year. Half of the time in Madisonville there is a last frost after April 15 so just be sure to be ready to protect your lithospermum if you have a late frost.

USDA Zone Info for Madisonville

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 Madisonville

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