The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Virginia it's a good idea to figure out when it's possible to plant datura.

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.

You can plant datura slightly earlier in the year because they do ok in moderate cold.

The earliest that you can plant datura in Virginia 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 datura and expect a good harvest is probably August. Any later than that and your datura may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your datura indoors.

Last Frost Date

On average all chance of frost has passed is on May 15 in Virginia. It might get as low as -35°F during the coldest months of winter.

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

USDA Zone Info for Virginia

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-35°F
Highest Expected Low	-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Virginia

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