The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The earliest that you can plant datura in Zone 11b should be determined by looking at the USDA zone info.

Planting Calendar for Datura

Frost tolerance for datura:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since datura are barely cold tolerant you can plant them just a tiny bit earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant datura in Zone 11b is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant datura and expect a good harvest is probably November. If you wait any later than that and your datura may not have a chance to grow to maturity. Starting your datura indoors is a great way to get them started a few weeks earlier.

Last Frost Date

In Zone 11b it never frosts. In the coldest months of winter you should expect an average low temperature of 45°F.

Since the USDA zone info for Zone 11b is an average the actual date of last frost can change quite a bit from year to year. Since it never frosts in Zone 11b you do not have to be ready to cover your datura in the event of a late frost.

USDA Zone Info for Zone 11b

Here is the info for USDA Zone 11b.

Average Date of Last Frost (spring)	Never
Average Date of First Frost (fall)	Never
Lowest Expected Low	45°F
Highest Expected Low	50°F

This means that on a really cold year, the coldest it will get is 45°F. On most years you should be prepared to experience lows near 50°F.

Plants to Grow in Zone 11b

You may be interested in your other planting guides for Zone 11b.