The USDA Zone info is a great tool for gardeners to help us figure out 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.

In Concord you can determine when it's the best time to plant datura 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.

Datura are barely cold tolerant which means that you can plant them slightly earlier than other frost tender plants.

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

The last month that you can plant datura and expect a good harvest is probably September. If you wait any later than that and your datura may not have a chance to fully mature. Starting your datura indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Concord the average date of last frost happens on February 15. In the coldest months of winter you should expect an average low temperature of 25°F.

It's important to remember that USDA zone info for Concord is not always accurate and the actual date of last frost is different every year. Since half of the time in Concord you get a frost after February 15 be ready to cover your datura if you have a surprise late frost.

USDA Zone Info for Concord

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Concord

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