One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. 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 a good idea to plant lithospermum is to check out the USDA zone info for Dumas.

Planting Calendar for Lithospermum

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

You can not plant lithospermum until after the last frost because they are not cold tolerant.

The earliest that you can plant lithospermum in Dumas 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. You probably don't want to wait any later than that or else 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

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

Always keep in mind that USDA zone info for Dumas is not always accurate and the actual date of last frost changes from year to year. Half of the time in Dumas you get surprised by a frost after April 15 so make sure that you are prepared to cover your lithospermum in the event of a late frost.

USDA Zone Info for Dumas

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 Dumas

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